U.S. ICD-10-CM · FY 2027

M26.5 ICD-10-CM Code: Dentofacial functional abnormalities

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

M26.5

Dentofacial functional abnormalities

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where M26.5 sits

  1. 1

    Chapter 13

    Diseases of the musculoskeletal system and connective tissue (M00-M99)

  2. 2

    Section

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

  3. 3

    Category M26

    Dentofacial anomalies [including malocclusion]

  4. 4

    Code M26.5

    Dentofacial functional abnormalities

More specific choices

Codes under M26.5

M26.5 is a non-billable category. Choose the child code that best matches the documented diagnosis.

M26.50

Dentofacial functional abnormalities, unspecified

M26.51

Abnormal jaw closure

M26.52

Limited mandibular range of motion

M26.53

Deviation in opening and closing of the mandible

M26.54

Insufficient anterior guidance

M26.55

Centric occlusion maximum intercuspation discrepancy

M26.56

Non-working side interference

M26.57

Lack of posterior occlusal support

M26.59

Other dentofacial functional abnormalities

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for M26.5.

Code first

No “code first” instruction is listed for M26.5.

Use additional code

No “use additional code” instruction is listed for M26.5.

Excludes1

Conditions that should not be reported together with this code.

  • bruxism (F45.8)
  • teeth-grinding NOS (F45.8)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for M26.5.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code M26.5 mean?

M26.5 is the FY 2027 U.S. ICD-10-CM code for “Dentofacial functional abnormalities.”

Is M26.5 a billable or specific ICD-10-CM code?

No. M26.5 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is M26.5 located in ICD-10-CM?

M26.5 is listed in Chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99), within Dentofacial anomalies [including malocclusion] and other disorders of jaw (M26-M27) (M26–M27), under category M26, Dentofacial anomalies [including malocclusion].

What coding notes are listed for M26.5?

No inclusion terms are listed for M26.5 in this reference record. No code-first instruction is listed. Excludes1 notes: bruxism (F45.8); teeth-grinding NOS (F45.8). No Excludes2 note is listed.

Keep exploring

Related M26 codes

M26.0

Major anomalies of jaw size

M26.1

Anomalies of jaw-cranial base relationship

M26.2

Anomalies of dental arch relationship

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