Is M21.072 a billable ICD-10-CM code?

Yes. M21.072 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does M21.072 sit in the tabular list?

Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other joint disorders (M20-M25).

What cannot be coded together with M21.072?

M21.072 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above M21.072 (M21.0, M21) and apply to it just the same.

M21.072

M21.072 — Valgus deformity, not elsewhere classified, left ankle

Billable / specific codeICD-10-CMleft

M21.072 is a billable, specific ICD-10-CM code for valgus deformity, not elsewhere classified, left ankle. It is valid for submission on a claim.

Excludes1 inherited from the categories above M21.072

These are not written on M21.072, but they bind it: a note on a category applies to every code beneath it. Billing M21.072 with anything listed here is a denial.

Written on M21.0 — Valgus deformity, not elsewhere classified

metatarsus valgus (Q66.6)
talipes calcaneovalgus (Q66.4-)

Written on M21 — Other acquired deformities of limbs

acquired absence of limb (Z89.-)
congenital absence of limbs (Q71-Q73)
congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)

Excludes2 inherited from the categories above M21.072

Also inherited, and the opposite of Excludes1: these conditions are not part of M21.072, but a patient can have both, so you may code both.

Written on M21 — Other acquired deformities of limbs

acquired deformities of fingers or toes (M20.-)
coxa plana (M91.2)

Other codes that can never be billed with M21.072

These codes carry an Excludes1 note pointing at M21.072. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M21.072 alone.

M23Internal derangement of knee

Risk adjustment

M21.072 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

M21.072 is named in 17 Medicare coverage policies — 10 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

Code history

M21.072 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 M21.07. If M21.072 is not quite right, the correct code is usually one of these.

Questions about M21.072

Is M21.072 a billable ICD-10-CM code?: Yes. M21.072 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does M21.072 sit in the tabular list?: Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other joint disorders (M20-M25).
What cannot be coded together with M21.072?: M21.072 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above M21.072 (M21.0, M21) and apply to it just the same.