M26.59

Billable

ChapterM00–M99

Ranksubcategory

Official Description

Other dentofacial functional abnormalities

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Billable/specific code (valid for reimbursement).
•Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

Instructional Notes

Includes

Centric occlusion (of teeth) NOS
Malocclusion due to abnormal swallowing
Malocclusion due to mouth breathing
Malocclusion due to tongue, lip or finger habits

General instructions are available for the parent sections:

View CH13 Notes View M26-M27 Notes View M26.5 Notes

Clinical Hierarchy

CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)

M26-M27Dentofacial anomalies [including malocclusion] and other disorders of jaw (M26-M27)

M26Dentofacial anomalies [including malocclusion]

M26.5Dentofacial functional abnormalities

M26.59Other dentofacial functional abnormalities

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M26.59:

subcategoryM26.5

Dentofacial functional abnormalities

View context instructions

blockM26-M27

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

View context instructions

chapterCH13

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

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to M26.59. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

6 raw paths

Anomaly, anomalous (congenital) (unspecified type)1 unique routes

dentofacial

functional

specified NEC→M26.59

Breathing1 unique routes

mouth

causing malocclusion→M26.59

Malocclusion (teeth)3 unique routes

due to(3 variants)

abnormal swallowing→M26.59

mouth breathing→M26.59