Is M26.220 a billable ICD-10-CM code?

Yes. M26.220 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does M26.220 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).

M26.220

M26.220 — Open anterior occlusal relationship

Billable / specific codeICD-10-CM

M26.220 is a billable, specific ICD-10-CM code for open anterior occlusal relationship. It is valid for submission on a claim.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Anterior open bite

Other codes that can never be billed with M26.220

These codes carry an Excludes1 note pointing at M26.220. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M26.220 alone.

Q38Other congenital malformations of tongue, mouth and pharynx
Q75Other congenital malformations of skull and face bones
Q67.4Other congenital deformities of skull, face and jaw
Q18Other congenital malformations of face and neck

Risk adjustment

M26.220 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

M26.220 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 M26.220 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 M26.220.

Antero-occlusion
Open, opening›bite›anterior
Relationship›occlusal›open anterior

Code history

M26.220 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 M26.22. If M26.220 is not quite right, the correct code is usually one of these.

M26.221Open posterior occlusal relationship

Questions about M26.220

Is M26.220 a billable ICD-10-CM code?: Yes. M26.220 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does M26.220 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).