2027 ICD-10-CM Diagnosis Code M27Other diseases of jaws

ICD-10-CM Codes›M00–M99›M26-M27›M27

ICD-10-CM M27
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

M27 is a non-billable ICD-10-CM category code for other diseases of jaws, so it cannot be submitted on claims. Use a more specific code from this category instead, such as M27.0, M27.1, M27.2, and M27.3.

Code Identity

ICD-10-CM Code
M27
Billable Status
No — Non-Billable Category
Code Describes
Other diseases of jaws
Short Description
Other diseases of jaws
Same as the full description in the CMS dataset.
Chapter
M26-M27
Dentofacial anomalies [including malocclusion] and other disorders of jaw

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM26-M27Dentofacial anomalies [including malocclusion] and other disorders of jaw
CategoryM27Other diseases of jaws
This CodeM27Other diseases of jaws

Specific Coding for Other diseases of jawsOverview

Non-specific codes like M27 require more characters. Use one of these billable codes instead:

  • Use M27.0 for Developmental disorders of jaws

  • Use M27.1 for Giant cell granuloma, central

  • Use M27.2 for Inflammatory conditions of jaws

  • Use M27.3 for Alveolitis of jaws

  • M27.4 for Other and unspecified cysts of jaw

  • Use M27.40 for Unspecified cyst of jaw

  • Use M27.49 for Other cysts of jaw

  • M27.5 for Periradicular pathology associated with previous endodontic treatment

  • Use M27.51 for Perforation of root canal space due to endodontic treatment

  • Use M27.52 for Endodontic overfill

  • Use M27.53 for Endodontic underfill

  • Use M27.59 for Other periradicular pathology associated with previous endodontic treatment

  • M27.6 for Endosseous dental implant failure

  • Use M27.61 for Osseointegration failure of dental implant

  • Use M27.62 for Post-osseointegration biological failure of dental implant

  • Use M27.63 for Post-osseointegration mechanical failure of dental implant

  • Use M27.69 for Other endosseous dental implant failure

  • Use M27.8 for Other specified diseases of jaws

  • Use M27.9 for Disease of jaws, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to M27: its own notes plus those printed at block M26-M27 and Chapter 13. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block M26-M27 Dentofacial anomalies [including malocclusion] and other disorders of jaw applies to 94 codes
  • hemifacial atrophy or hypertrophy (Q67.4)
  • unilateral condylar hyperplasia or hypoplasia (M27.8)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

General instructions on how these codes are used.

From Chapter 13 (M00-M99) Diseases of the musculoskeletal system and connective tissue applies to 6,687 codes
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name M27, its category, or a range that includes it.

Excludes2 1

These codes carry an Excludes2 note naming M27: its condition is not part of those codes, and both may be reported when the patient has both.

  • K08 Other disorders of teeth and supporting structures
    disorders of jaw (M27.-)

Patient EducationClinical

Jaw Injuries and Disorders

Your jaw is a set of bones that holds your teeth. It includes:

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About M27Overview

What is the ICD-10 code for other diseases of jaws?

M27 is the ICD-10-CM category for other diseases of jaws, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is M27 (Other diseases of jaws) a billable code?

No. This is a category header that groups the codes for other diseases of jaws, and headers cannot be submitted on claims. Claims for other diseases of jaws need a more specific code from this category, such as M27.0, M27.1, and M27.2.

Can M27 be reported with Q67.4?

Not as a rule. The Excludes1 note at block M26-M27, which applies to M27, lists "hemifacial atrophy or hypertrophy (Q67.4)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).