M26.29 — Other anomalies of dental arch relationship
M26.29 is a billable, specific ICD-10-CM code for other anomalies of dental arch relationship. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Midline deviation of dental arch
- Overbite (excessive) deep
- Overbite (excessive) horizontal
- Overbite (excessive) vertical
- Posterior lingual occlusion of mandibular teeth
Other codes that can never be billed with M26.29
These codes carry an Excludes1 note pointing at M26.29. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M26.29 alone.
Risk adjustment
M26.29 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
M26.29 is named in 9 Medicare coverage policies — 2 listing it as supporting medical necessity, and 7 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A58883Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
- A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
How M26.29 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to M26.29.
- Abocclusion
- Apertognathia
- Closed bite
- Overbite(deep) (excessive) (horizontal) (vertical)
- Deviation›midline(jaw) (teeth) (dental arch)
- Deviation›teeth, midline
- Occlusion, occluded›posterior lingual, of mandibular teeth
- Occlusion, occluded›teeth(mandibular) (posterior lingual)
- Anomaly, anomalous›dental›arch relationship›specified NEC
- Anomaly, anomalous›dentofacial›dental arch relationship›specified NEC
- Anomaly, anomalous›dentofacial›malocclusion›dental arch relationship NEC
Code history
M26.29 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share M26.2. If M26.29 is not quite right, the correct code is usually one of these.
Questions about M26.29
- Is M26.29 a billable ICD-10-CM code?
- Yes. M26.29 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does M26.29 sit in the tabular list?
- Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Dentofacial anomalies [including malocclusion] and other disorders of jaw (M26-M27).