MCMedicalCodingSoftware
M26.09

M26.09: Other specified anomalies of jaw size

Billable / specific codeICD-10-CM

M26.09 is a billable, specific ICD-10-CM code for other specified anomalies of jaw size. It is valid for submission on a claim.

Check M26.09 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above M26.09

A category’s note binds every code beneath it.

Written on M26.0: Major anomalies of jaw size

Other codes that can never be billed with M26.09

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Q18Other congenital malformations of face and neck
  • Q38Other congenital malformations of tongue, mouth and pharynx
  • Q67.4Other congenital deformities of skull, face and jaw
  • Q75Other congenital malformations of skull and face bones

Risk adjustment

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

Medicare coverage

M26.09 is named in 7 Medicare coverage policies: 0 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

  • Macrognathia, macrognathism(congenital) (mandibular) (maxillary)
  • Micrognathia, micrognathism(congenital) (mandibular) (maxillary)
  • Opisthognathism
  • Retrusion, premaxilla(developmental)
  • Agenesis›jaw
  • Agenesis›mandible, maxilla
  • Hyperplasia, hyperplastic›jaw
  • Hypoplasia, hypoplastic›jaw
  • Recession, receding›chin
  • Anomaly, anomalous›dentofacial›jaw size›specified type NEC

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under M26.0

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.