LOINC Code Information
| LOINC Number || 30658-9 |
| The unique LOINC Code is a string in the format of nnnnnnnn-n. |
| Component || MULTISECTION^WO CONTRAST |
| First major axis-component or analyte |
| Property || FIND |
| Second major axis-property observed (e.g., mass vs. substance) |
| Time Aspect || PT |
| Third major axis-timing of the measurement (e.g., point in time vs 24 hours) |
| System || HEAD>INTERNAL AUDITORY CANAL |
| Fourth major axis-type of specimen or system (e.g., serum vs urine) |
| Scale Type || DOC |
| Fifth major axis-scale of measurement (e.g., qualitative vs. quantitative) |
| Method Type || MR |
| Sixth major axis-method of measurement |
| Class || RAD |
| An arbitrary classification of the terms for grouping related observations together. The current classifications are listed in Table 29. We present the database sorted by the class field within class type (see field 23). Users of the database should feel free to re-sort the database in any way they find useful, and/or to add their own classifying fields to the database.The content of the laboratory test subclasses should be obvious from the subclass name. |
| VersionLastChanged || 2.61 |
| The LOINC version number in which the record has lastchanged. For new records, this field contains the same value asthe loinc.FirstPublishedRelease field. |
| Change Type || MIN |
| Change Type CodeDEL = delete (deprecate)ADD = addNAM = change to Analyte/Component (field #2);MAJ = change to name field other than #2 (#3 - #7);MIN = change to field other than nameUND = undelete |
| DefinitionDescription || N/S (NOT SPECIFIED) |
| Narrative text that describes the LOINC term taken as a whole(i.e., taking all of the parts of the term together) or relaysinformation specific to the term, such as the context in whichthe term was requested or its clinical utility. |
| Status || ACTIVE |
| ACTIVE = Concept is active. Use at will.TRIAL = Concept is experimental in nature. Use with caution as the concept and associated attributes may change.DISCOURAGED = Concept is not recommended for current use. New mappings to this concept are discouraged; although existing may mappings may continue to be valid in context. Wherever possible, the superseding concept is indicated in the MAP_TO field in the MAP_TO table (see Table 28b) and should be used instead.DEPRECATED = Concept is deprecated. Concept should not be used, but it is retained in LOINC for historical purposes. Wherever possible, the superseding concept is indicated in the MAP_TO field (see Table 28b) and should be used both for new mappings and updating existing implementations. |
| Cosumer Name || N/S (NOT SPECIFIED) |
| An experimental (beta) consumer friendly name for this item. The intent is to provide a test name that health care consumers will recognize; it will be similar to the names that might appear on a lab report and is not guaranteed to be unique because some elements of the LOINC name are likely to be omitted. We will continue to modify these names in future release, so do not expect it to be stable (or perfect). Feedback is welcome. |
| Class Type || 2 |
| 1=Laboratory class; 2=Clinical class; 3=Claims attachments; 4=Surveys |
| Formula || N/S (NOT SPECIFIED) |
| Contains the formula in human readable form, for calculatingthe value of any measure that is based on an algebraic or other formula except those for which the component expresses the formula. So Sodium/creatinine does not need a formula, but Free T3 index does. |
| Example Answers || N/S (NOT SPECIFIED) |
| For some tests and measurements, we have supplied examples of valid answers, such as “1:64”, “negative @ 1:16”, or “55”. |
| Survey Question Text || N/S (NOT SPECIFIED) |
| Verbatim question from the survey instrument |
| Survey Question Number || N/S (NOT SPECIFIED) |
| Exact name of the survey instrument and the item/question number |
| Units Required || N |
| Y/N field that indicates that units are required when this LOINC is included as an OBX segment in a HIPAA attachment |
| Submitted Units || N/S (NOT SPECIFIED) |
| Units as received from person who requested this LOINC term. |
| Related Names v2.05 || BRAIN; C; CONTR; CONTRA; CONTRST; CRANIAL; CRANIUM; DOCUMENT; EAR CANAL; FINDING; FINDINGS; IAC; IAM; IMAGING; INTERNAL AUDITORY MEATUS; INTERNAL EAR CANAL; INTRACRANIAL; MITRAL REGURGITATION MAXIMUM VELOCITY; MRI; POINT IN TIME; RADIOLOGY; RANDOM; SKULL; WITHOUT CONTRAST |
| This feld was introduced in version 2.05. It contains synonyms for each of the parts of the fully specifed LOINC name (component, property, time, system, scale, method). |
| Short Name || MR IAC WO CONTR |
| Introduced in version 2.07, this field contains the short form of the LOINC name and is created via a table-driven algorithmic process. The short name often includes abbreviations and acronyms. |
| Order OBS || BOTH |
| Defines term as order only, observation only, or both. A fourth category, Subset, is used for terms that are subsets of a panel but do not represent a package that is known to be orderable. We have defined them only to make it easier to maintain panels or other sets within the LOINC construct. This field reﬂects our best approximation of the terms intended use; it is not to be considered normative or a binding resolution. |
| CDISC Commont Test || N/S (NOT SPECIFIED) |
| “Y” in this field means that the term is a part of subset of terms used by CDISC in clinical trials. |
| HL7 Field Subfield Id || N/S (NOT SPECIFIED) |
| A value in this field means that the content should be delivered in the named field/subfield of the HL7 message. When NULL, the data for this data element should be sent in an OBX segment with this LOINC code with the value stored in OBX-3 and in the OBX-5. |
| External Copyright Notice || N/S (NOT SPECIFIED) |
| External copyright holders copyright notice for this LOINC code. |
| Example Units || N/S (NOT SPECIFIED) |
| This field is populated with a combination of submitters units and units that people have sent us. Its purpose is to show users representative, but not necessarily recommended, units in which data could be sent for this term. |
| Long Common Name || MR INTERNAL AUDITORY CANAL WO CONTRAST |
| This field contains the LOINC term in a more readable format than the fully specified name. The long common names have been created via a table driven algorithmic process. Most abbreviations and acronyms that are used in the LOINC database have been fully spelled out in English. |
| Units and Range || N/S (NOT SPECIFIED) |
| Units of measure (expressed using UCUM units) and normalranges for physical quantities and survey scores.Intended astailorable starter sets for applications that use LOINC forms asa way to capture data.Units are separated from normal rangesby a colon(:) and sets of unit: normal range pairs are separatedby a semi - colon(;). Syntax for the normal range includessquare brackets, which mean that the number adjacent to thebracket is included, and parentheses, which means that thenumber itself is not included.For example, [2,4] means “twoto four”, while [2,4) means “two to less than four” and(2, 4)means “between two and four but does not include two andfour”. |
| Example UCUM Units || N/S (NOT SPECIFIED) |
| The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures beingcontemporarily used in international science, engineering, and business. (www.unitsofmeasure.org ) This field contains example units of measures for this term expressed as UCUM units. |
| Example SI UCUM Units || N/S (NOT SPECIFIED) |
| The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business. (www.unitsofmeasure.org) This field contains example units of measures for this term expressed as SI UCUM units. |
| Status Reason || N/S (NOT SPECIFIED) |
| Classification of the reason for concept status. This field will be Null for ACTIVE concepts, and optionally populated for terms in other status where the reason is clear. DEPRECATED or DISCOURAGED terms may take values of: AMBIGUOUS, DUPLICATE, or ERRONEOUS. |
| Status Text || N/S (NOT SPECIFIED) |
| Explanation of concept status in narrative text. This field will be Null for ACTIVE concepts, and optionally populated for terms in other status. |
| Change Reason || THE SCALE HAS BEEN CHANGED FROM "NAR" TO "DOC" TO FIT WITH THE CDA MODEL.; METHOD OF "MRI" WAS CHANGED TO "MR". THE LOINC/RADLEX COMMITTEE AGREED TO USE A SUBSET OF THE TWO-LETTER DICOM MODALITY CODES AS THE PRIMARY MODALITY IDENTIFIER. CHANGED SYSTEM FROM "INTERNAL AUDITORY CANAL" FOR CONFORMANCE WITH THE LOINC/RADLEX UNIFIED MODEL. |
| Detailed explanation about special changes to the term over time. |
| Common Test Rank || 0 |
| Ranking of approximately 2000 common tests performed by laboratories in USA. |
| Common Order Rank || 0 |
| Ranking of approximately 300 common orders performed by laboratories in USA. |
| Common SI Test Rank || 0 |
| Corresponding SI terms for 2000 common tests performed by laboratories in USA. |
| HL7 ATTACHMENT STRUCTURE || IG EXISTS |
| This field will be populated in collaboration with the HL7 Attachments Work Group as described in the HL7 Attachment Specification: Supplement to Consolidated CDA Templated Guide. Text will either be STRUCTURED or UNSTRUCTURED for relevant terms. The STRUCTURED terms are the allowed document type codes in the Consolidated CDA (C-CDA) Implementation guide. UNSTRUCTURED terms are approved by the HL7 Attachments WG for transmission using the Unstructured Document template of the C-CDA |
| EXTERNAL COPYRIGHT LINK || N/S (NOT SPECIFIED) |
| For terms that have a third party copyright, this field is populated with the COPYRIGHT_ID from the Source Organization table (see Table 29c below). It links a external copyright statement to a term. |
| Panel Type || N/S (NOT SPECIFIED) |
| Describes a panel as a 'Convenience group', 'Organizer', or 'Panel'. A 'Panel' is an enumerated set of terms that are usedtogether in direct clinical care. The package would typically be thought of as a single orderable item that contains a set ofreported observations.A 'Convenience group' is an enumerated set of terms used for a common purpose, but nottypically orderable as a single unit. An 'Organizer' is a subpanel(i.e.a child) within another panel that is only used togroup together a set of terms, but is not an independently used entity.They often represent a header in a form, or serve as a navigation concept. |
| Ask At Order Entry || N/S (NOT SPECIFIED) |
| A multivalued field, semicolon delimited list of LOINC codesthat represent optional Ask at Order Entry (AOE) observationsfor a clinical observation or laboratory test. A LOINC term inthis field may represent a single AOE observation or a panelcontaining several AOE observations. |
| Associated Observations || 81220-6;72230-6 |
| A multi-valued, semicolon delimited list of LOINC codes thatrepresent optional associated observation(s) for a clinicalobservation or laboratory test.A LOINC term in this field mayrepresent a single associated observation or panel containingseveral associated observations. |
| Version First Released || 2.04 |
| The LOINC version number in which the record was first released. For oldest records where the version released number is known, this field will be null. |
| Valid HL7 Attachment Request || N/S (NOT SPECIFIED) |
| A value of ‘Y’ in this field indicates that this LOINC code can be sent by a payer as part of an HL7 attachment request for additional information. |
| LOINC Display Name || N/S (NOT SPECIFIED) |
| This field contains the LOINC Display Name. |
Similar LOINC Codes
| 24740-3—MR IAC+Post fossa WO+W contr IV |
Name: MR Internal auditory canal and Posterior fossa WO and W contrast IV
System: Head>Internal auditory canal+Posterior fossa.
Component: Multisection^WO & W contrast IV .
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| 30659-7—MR IAC WO+W contr IV |
Name: MR Internal auditory canal WO and W contrast IV
System: Head>Internal auditory canal.
Component: Multisection^WO & W contrast IV .
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| 37278-9—MR Brain+IAC WO contr |
Name: MR Brain and Internal auditory canal WO contrast
System: Head>Brain+Internal auditory canal.
Component: Multisection^WO contrast .
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What is the appropriate CPT® code for magnetic resonance imaging (MRI) internal auditory canals (IACs)? Answer: MRI of the IACs is billed with the appropriate MRI brain code (70551–70553). In most cases, a few sequences of the IACs are performed with an MRI brain.
These studies image the Brain, the Nerves in the Ear, the Eye and Optic Nerve and/or Pituitary Gland (a small gland in the middle of the brain. These studies help to detect abnormalities such as cysts, tumors, MS (Multiple Sclerosis), seizure, stroke and other pathologies.
Magnetic resonance imaging (MRI) of the internal auditory canal (IAC) is a non-invasive, painless diagnostic imaging procedure that uses using radio waves and a strong magnetic field to create detailed images of the bony canal that transmits nerves and blood vessels from the base of the brain to the inner ear.
MRI without contrast is the usual MRI procedure which is done without the use of the contrast agent. The results of the MRI procedure are as valuable and relevant as those done with the use of a contrast agent.
You should not have to do too much to prepare for a head MRI. You may be able to eat, drink and take your medications as usual. However, if your doctor ordered a scan for other parts of your body, such as your abdominal region, they may instruct you not to drink or eat four to six hours before the test.
An MRI scan can detect abscess, as well as meningitis, and infections involving the ears and eyes. Brain tumors.
This means it's unlikely you'll get the results of your scan immediately. The radiologist will send a report to the doctor who arranged the scan, who will discuss the results with you. It usually takes a week or two for the results of an MRI scan to come through, unless they're needed urgently.
Thus, this association may indicate the involvement of limbic system dysfunction in tinnitus and also show that the change of white matter may be related to the severity of tinnitus, for which we need to expand the sample in the future for further research on this.
Magnetic resonance imaging (MRI) scan
The MRI scan will not confirm a diagnosis of Ménière's disease, nor will it show which ear is affected or how severe the condition is. During initial investigation it is important to exclude many serious conditions which can cause vertigo or unilateral hearing loss and tinnitus.
An MRI may also be ordered if there is a change in your headaches or anything unusual about them, if there are additional symptoms happening with your headaches, or if there is concern there might be a structural problem causing your headaches.
“Can MRI show if I have dementia?” In fact, we scan patients every day with a diagnosis of dementia, memory loss, Alzheimer's, and confusion, among a variety of other neurological disorders. The truth is that MRI is NOT the test to formally diagnose dementia.
Preparation for your MRI Appointment:
Do not have anything to drink 1-hour before your appointment time. If you have experienced previous nausea or vomiting with Gadolinium in the past, contact your referring physician concerning an anti-emetic prescription. Take your medications as usual unless otherwise instructed.
For oral contrast, you will be given a liquid contrast preparation to swallow. In some situations, the contrast may be given rectally. You will lie on a scan table that slides into a large, circular opening of the scanning machine. Pillows and straps may be used to prevent movement during the procedure.
Many of our examinations require your cooperation and ability to follow commands to hold your breath to produce the images required to make a diagnosis. For those examinations, we will not allow you to fall asleep. However, there are many other types of MRI examinations that do not require you to follow commands.
Basic Comfort Measures
Headsets can help to drown out the noise of the MRI machine and allow you to listen to your favorite music, nature sounds, guided meditation, or whatever you find most relaxing. You may also be able to arrange to have a family member in the room with you during the procedure.
If you move during the MRI, the images will have to be taken again and the process begun again. 9.
The symptoms of tinnitus include a noise in the ears, such as ringing, roaring, buzzing, hissing, or whistling; the noise may be intermittent or continuous. Most of the time, only the person who has tinnitus can hear it (subjective tinnitus).
While tinnitus typically begins with a hearing loss, it is not exclusively an auditory problem. It is a result of neurological changes within the auditory system and within the parts of the brain that influence conscious attention and emotional state.
Yes. Tinnitus can incapacitate you from work, leading to disability. Even with treatment and therapeutic management, tinnitus can cause debilitating limitations.
These may include nausea, headache, and pain at the site of injection. It is very rare that patients experience hives, itchy eyes, or other allergic reactions to the contrast material. If you have allergic symptoms, tell the technologist.
In the simplest terms, an abnormal brain MRI means that the scan does not show a healthy brain. The scanned image may show structural damages that may indicate injury but also lesions, inflammation, swelling, and bleeding.
You won't have pain from the magnetic field or radio waves used for the MRI test. But you may be tired or sore from lying in one position for a long time.
CPT® Code 73721 in section: Magnetic resonance (eg, proton) imaging, any joint of lower extremity.
CPT® Code 72197 in section: Magnetic resonance (eg, proton) imaging, pelvis.
CPT® Code 74183 in section: Magnetic resonance (eg, proton) imaging, abdomen.
CPT® Code 70551 in section: Magnetic resonance (eg, proton) imaging, brain (including brain stem)
MRI procedure codes (70549, 70553, 70559, 71552, 72197, 73220, 73223, 73720, 73723, and 74183) include a MRI sequence performed without contrast media, followed by a MRI sequence performed with contrast media, and followed by MRI further sequences. The contrast medium used may be billed separately.
A: A whole-body diagnostic MRI study is rare, and there is no CPT code that accurately describes this procedure. When medically necessary and performed, the unlisted MRI code 76498 (Unlisted magnetic resonance procedure [eg, diagnostic, interventional]) should be reported.
The 70552 CPT code can be reported for MRI with contrast. The 70553 CPT code can be billed for brain or pituitary MRI with and without contrast.
The Current Procedural Terminology (CPT®) codes offer doctors and health care professionals a uniform language for coding medical services and procedures to streamline reporting, increase accuracy and efficiency.
Each CPT code is five characters long, and may be numeric or alphanumeric, depending on which category the CPT code is in. Don't confuse this with the 'category' in ICD.
Category codes are user defined codes to which you can assign a title and a value. The title appears on the appropriate screen next to the field in which you type the code.
You need to stop eating and drinking a couple of hours before an MRCP scan. This is usually 4 to 8 hours beforehand. Talk to your doctor if this could be a problem, for example if you're diabetic. You can usually take all your medicines as normal.
Magnetic resonance cholangiopancreatography or MRCP uses a powerful magnetic field, radio waves and a computer to evaluate the liver, gallbladder, bile ducts, pancreas and pancreatic duct for disease. It is noninvasive and does not use ionizing radiation.
Injection of contrast into a joint for magnetic resonance imaging (MRI) without a diagnostic radiographic arthrogram should not be reported with code 20610. Instead, assign the appropriate arthrogram injection code such as 23350. If fluoroscopy is used to guide the injection, add code 77002.
Magnetic resonance imaging (MRI), magnetic resonance angiography (MRA), and magnetic resonance venography (MRV) are specialized examinations that use a magnetic field, radio waves, and a computer to create detailed, cross-sectional images of the head.
Non-contrast MRI is great option for patients for whom dye is not recommended, pregnant women and kidney-compromised patients. Non-contrast also provides greater images of blood vessel activity, detecting aneurysms and blocked blood vessels.
The matching ICD-10-PCS code is B030ZZZ, Magnetic Resonance Imaging (MRI) of Brain.