M26
Dentofacial anomalies [including malocclusion]
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 12 never code together
M26-M27block
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 1
M00-M99chapter
Notes
- Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
Index entries leading here filed at null
No alphabetic index entry points at this code.
Subordinate codes 10
M26.0 Major anomalies of jaw size M26.1 Anomalies of jaw-cranial base relationship M26.2 Anomalies of dental arch relationship M26.3 Anomalies of tooth position of fully erupted tooth or teeth M26.4 Malocclusion, unspecified M26.5 Dentofacial functional abnormalities M26.6 Temporomandibular joint disorders M26.7 Dental alveolar anomalies M26.8 Other dentofacial anomalies M26.9 Dentofacial anomaly, unspecified
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.