Is M22.4 a billable ICD-10-CM code?

No. M22.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does M22.4 sit in the tabular list?

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

M22.4

M22.4 — Chondromalacia patellae

Non-billable headerICD-10-CM

M22.4 is a non-billable header ICD-10-CM code for chondromalacia patellae. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with M22.4

These codes carry an Excludes1 note pointing at M22.4. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M22.4 alone.

M94.2Chondromalacia

Risk adjustment

M22.4 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.

Code to one of these instead M22.4

3 child codes. Green means billable.

Related codes at this level

Codes that share M22. If M22.4 is not quite right, the correct code is usually one of these.

Questions about M22.4

Is M22.4 a billable ICD-10-CM code?: No. M22.4 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does M22.4 sit in the tabular list?: Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other joint disorders (M20-M25).