MCMedicalCodingSoftware
M27.8

M27.8: Other specified diseases of jaws

Billable / specific codeICD-10-CM

M27.8 is a billable, specific ICD-10-CM code for other specified diseases of jaws. It is valid for submission on a claim.

Check M27.8 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Cherubism
  • Exostosis
  • Fibrous dysplasia
  • Unilateral condylar hyperplasia
  • Unilateral condylar hypoplasia

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

M27.8 is named in 9 Medicare coverage policies: 2 listing it as supporting medical necessity, and 7 listing it as NOT covered. Which one applies depends on your Medicare contractor.

  • A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A58883Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered

Alphabetic index entries that lead here

  • Cherubism
  • Enostosis
  • Exostosis›jaw(bone)
  • Fistula›palate(hard)
  • Hyperplasia, hyperplastic›unilateral condylar
  • Hypertrophy, hypertrophic›palate(hard)
  • Hypoplasia, hypoplastic›unilateral condylar
  • Deformity›palate›acquired
  • Disease, diseased›jaw›specified NEC
  • Dysplasia›fibrous›jaw
  • Hyperplasia, hyperplastic›mandible, mandibular›unilateral condylar
  • Hypoplasia, hypoplastic›mandible, mandibular›unilateral condylar

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under M27

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.