2024 ICD-10-CM Diagnosis Code M27.8

Other specified diseases of jaws

ICD-10-CM:
M27.8
Short Description:
Other specified diseases of jaws
Is Billable?
Yes - Valid for Submission
Code Navigator:

Code Classification

  • Diseases of the musculoskeletal system and connective tissue
    (M00–M99)
    • Dentofacial anomalies [including malocclusion] and other disorders of jaw
      (M26-M27)
      • Other diseases of jaws
        (M27)

M27.8 is a billable diagnosis code used to specify a medical diagnosis of other specified diseases of jaws. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Abnormal jaw movement
  • Abnormal jaw opening
  • Buccal exostosis
  • Cherubic facies
  • Cherubism with gingival fibromatosis
  • Condylar hypoplasia with mandibular asymmetry
  • Exostosis of jaw
  • Fibro-osseous lesion of jaw
  • Fibrosis of capsule of temporomandibular joint
  • Fibrous dysplasia of jaw
  • Fistula of hard palate
  • Fistula of soft palate
  • Gingival fibromatosis
  • Hypoplasia of left condyloid process of mandible
  • Hypoplasia of mandibular condyle
  • Hypoplasia of mandibular condyle
  • Hypoplasia of mandibular condyle
  • Hypoplasia of right condyloid process of mandible
  • Labial exostosis
  • Lack of posterior alveolar arch support
  • Lateral soft palate fistula
  • Lingual exostosis
  • Mandibular laterognathia
  • Motor function of jaw - finding
  • Motor function of jaw - finding
  • Palatal tubercle
  • Resorption of mandible
  • Resorption of mandibular condyle
  • Weak down pressure of chin
  • Weak lateral movement of chin

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Cherubism
  • Exostosis
  • Fibrous dysplasia
  • Unilateral condylar hyperplasia
  • Unilateral condylar hypoplasia

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert to ICD-9-CM Code

Source ICD-10-CM CodeTarget ICD-9-CM Code
M27.8526.81 - Exostosis of jaw
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
M27.8526.89 - Jaw disease NEC
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education


Jaw Injuries and Disorders

Your jaw is a set of bones that holds your teeth. It consists of two main parts. The upper part is the maxilla. It doesn't move. The moveable lower part is called the mandible. You move it when you talk or chew. The two halves of the mandible meet at your chin. The joint where the mandible meets your skull is the temporomandibular joint.

Jaw problems include:

  • Fractures (broken bones)
  • Dislocations
  • Temporomandibular joint dysfunction
  • Osteonecrosis, which happens when your bones lose their blood supply
  • Cancers

Treatment of jaw problems depends on the cause.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.