M26-M27 — Dentofacial anomalies [including malocclusion] and other disorders of jaw
ICD-10-CM codes M26-M27 cover dentofacial anomalies [including malocclusion] and other disorders of jaw, within diseases of the musculoskeletal system and connective tissue. The block holds 115 codes across 2 categories, of which 94 are billable and 21 are header codes that cannot be submitted on a claim.
What else to watch in M26-M27
- 12 codes are laterality-specific. They come in left and right pairs, and the pair is mutually exclusive on a single site: coding both without a bilateral code is a contradiction a scrubber should catch before the payer does.
- 94 codes are named in Medicare coverage policies. An LCD or NCD lists them as supporting medical necessity, or explicitly as not supporting it. Which applies depends on the MAC for your state.