Is M83 a billable ICD-10-CM code?

No. M83 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does M83 sit in the tabular list?

Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Disorders of bone density and structure (M80-M85).

What cannot be coded together with M83?

M83 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

M83

M83 — Adult osteomalacia

Non-billable headerICD-10-CM

M83 is a non-billable header ICD-10-CM code for adult osteomalacia. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

infantile and juvenile osteomalacia (E55.0)
renal osteodystrophy (N25.0)
rickets (active) (E55.0)
rickets (active) sequelae (E64.3)
vitamin D-resistant osteomalacia (E83.31)
vitamin D-resistant rickets (active) (E83.31)

Other codes that can never be billed with M83

These codes carry an Excludes1 note pointing at M83. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading M83 alone.

E55Vitamin D deficiency
E21Hyperparathyroidism and other disorders of parathyroid gland
E83.3Disorders of phosphorus metabolism and phosphatases
K91.2Postsurgical malabsorption, not elsewhere classified

Risk adjustment

M83 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 M83

8 child codes. Green means billable.

Questions about M83

Is M83 a billable ICD-10-CM code?: No. M83 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does M83 sit in the tabular list?: Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Disorders of bone density and structure (M80-M85).
What cannot be coded together with M83?: M83 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.