2026 ICD-10-CM Diagnosis Code D37.02Neoplasm of uncertain behavior of tongue
ICD-10-CM Codes›C00–D49›D37-D48›D37
- Billable — Valid for Submission
- Not Chronic
D37.02 is a billable ICD-10-CM diagnosis code for neoplasm of uncertain behavior of tongue. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 146 through 148. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Neoplasms of unspecified nature or uncertain behavior.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Neoplasm of junctional zone of tongue
- Neoplasm of lingual tonsil
- Neoplasm of uncertain behavior of base of tongue
- Neoplasm of uncertain behavior of border of tongue
- Neoplasm of uncertain behavior of dorsal surface of tongue
- Neoplasm of uncertain behavior of junctional zone of tongue
- Neoplasm of uncertain behavior of lingual tonsil
- Neoplasm of uncertain behavior of oral part of tongue
- Neoplasm of uncertain behavior of oropharynx
- Neoplasm of uncertain behavior of tongue
- Neoplasm of uncertain behavior of ventral surface of tongue
- Neoplasm of uncertain behavior of Waldeyer's ring
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Ankyloglossia
a severe congenital restriction of tongue movement, resulting from fusion or adherence of the tongue to the floor of the mouth. in partial ankyloglossia (tongue-tie) the lingual frenum is abnormally short, or is attached too close to the tip of the tongue. omim: 106280Bluetongue
a reovirus infection, chiefly of sheep, characterized by a swollen blue tongue, catarrhal inflammation of upper respiratory and gastrointestinal tracts, and often by inflammation of sensitive laminae of the feet and coronet.Body Piercing
the perforation of an anatomical region for the wearing of jewelry.Electronic Nose
a device used to detect airborne odors, gases, flavors, volatile substances or vapors.Fasciculation
involuntary contraction of the muscle fibers innervated by a motor unit. fasciculations may be visualized as a muscle twitch or dimpling under the skin, but usually do not generate sufficient force to move a limb. they may represent a benign condition or occur as a manifestation of motor neuron disease or peripheral nervous system diseases. (adams et al., principles of neurology, 6th ed, p1294)Glossitis, Benign Migratory
an idiopathic disorder of the tongue characterized by the loss of filiform papillae leaving reddened areas of circinate macules bound by a white band. the lesions heal, then others erupt.Medicine, Chinese Traditional
a system of traditional medicine which is based on the beliefs and practices of the chinese culture.Oral Frenectomy
surgical procedures to release or remove abnormally short or tightly attached frenum (e.g., lingual frenum or labial frenum) associated with a pathological condition (e.g., tongue tie and lip tie).Pentastomida
a subclass of crustacea comprising the tongue worms which are obligatory parasites of reptiles, birds, and mammals including humans.Tongue
a muscular organ in the mouth that is covered with pink tissue called mucosa, tiny bumps called papillae, and thousands of taste buds. the tongue is anchored to the mouth and is vital for chewing, swallowing, and for speech.Tongue Diseases
diseases involving the tongue.Tongue Habits
acquired responses regularly manifested by tongue movement or positioning.Tongue Neoplasms
tumors or cancer of the tongue.Tongue, Fissured
the occurrence of of breaks or slits in the tissue of the dorsal surface of the tongue.Tongue, Hairy
a benign condition of the tongue characterized by hypertrophy of the filiform papillae that give the dorsum of the tongue a furry appearance. the color of the elongated papillae varies from yellowish white to brown or black, depending upon staining by substances such as tobacco, food, or drugs. (dorland, 27th ed)
Table of NeoplasmsClinical
Anatomical sites in the Table of Neoplasms that reference this code family.
| Site | Malig. Primary | Malig. Secondary | Ca in situ | Benign | Uncertain | Unspec. |
|---|---|---|---|---|---|---|
| frenulum | C02.2 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| frenulum › linguae | C02.2 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| lingual NEC [See Also: Neoplasm, tongue] | C02.9 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue | C02.9 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › anterior (two-thirds) NEC | C02.3 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › anterior (two-thirds) NEC › dorsal surface | C02.0 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › anterior (two-thirds) NEC › ventral surface | C02.2 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › base (dorsal surface) | C01 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › border (lateral) | C02.1 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › dorsal surface NEC | C02.0 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › fixed part NEC | C01 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › foreamen cecum | C02.0 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › frenulum linguae | C02.2 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › junctional zone | C02.8 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › margin (lateral) | C02.1 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › midline NEC | C02.0 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › mobile part NEC | C02.3 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › posterior (third) | C01 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › root | C01 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › surface (dorsal) | C02.0 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › surface (dorsal) › base | C01 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › surface (dorsal) › ventral | C02.2 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › tip | C02.1 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tongue › tonsil | C02.4 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
| tonsil › lingual | C02.4 | C79.89 | D00.07 | D10.1 | D37.02 | D49.0 |
Patient EducationClinical
Tongue Disorders
Your tongue helps you taste, swallow, and chew. You also use it to speak. Your tongue is made up of many muscles. The upper surface contains your taste buds.
Read the full article at MedlinePlus
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Convert D37.02 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About D37.02Overview
Is D37.02 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report neoplasm of uncertain behavior of tongue on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does D37.02 group to?
When neoplasm of uncertain behavior of tongue is the principal diagnosis on an inpatient stay, it groups to MS-DRG 146, 147, 148, with relative weights from 0.7971 to 2.1174 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of D37.02?
Under the General Equivalence Mappings, neoplasm of uncertain behavior of tongue converts to ICD-9-CM 235.1 (unc behav neo oral/phar). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
