M26-M27Not billable, use a more specific code below

Dentofacial anomalies [including malocclusion] and other disorders of jaw (M26-M27)

chapter 13: Diseases of the Musculoskeletal System and Connective Tissue

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Instructional notes

Excludes1: not coded here, use a different code

  • hemifacial atrophy or hypertrophy (Q67.4)
  • unilateral condylar hyperplasia or hypoplasia (M27.8)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers site and laterality, acute injury versus chronic musculoskeletal conditions, 7th characters for pathologic fractures, osteoporosis with or without current fracture, and multisystem inflammatory syndrome.

Read Section I.C.13 (page 60)

All codes under M26-M27

M26-M27 can't be used on a claim. Pick a billable code below; grey headings group them.

M26-M27 MS-DRGs

This code does not group to an MS-DRG as a principal diagnosis.

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Facial Injuries and Disorders

Face injuries and disorders can cause pain and affect how you look. In severe cases, they can affect sight, speech, breathing and your ability to swallow. Fractures (broken bones), especially in the bones of your nose, cheekbone and jaw, are common facial injuries.

Read more about facial injuries and disorders on MedlinePlus

Jaw Injuries and Disorders

Your jaw is a set of bones that holds your teeth. It includes: Jaw problems can include:

Read more about jaw injuries and disorders on MedlinePlus