Is M11 a billable ICD-10-CM code?

No. M11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does M11 sit in the tabular list?

Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Inflammatory polyarthropathies (M05-M14).

M11

M11 — Other crystal arthropathies

Non-billable headerICD-10-CM

M11 is a non-billable header ICD-10-CM code for other crystal arthropathies. It cannot be billed on its own: choose one of the more specific child codes below.

Other codes that can never be billed with M11

These codes carry an Excludes1 note pointing at M11. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M11 alone.

E83.5Disorders of calcium metabolism

Risk adjustment

M11 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 M11

5 child codes. Green means billable.

Questions about M11

Is M11 a billable ICD-10-CM code?: No. M11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does M11 sit in the tabular list?: Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Inflammatory polyarthropathies (M05-M14).