Is M86 a billable ICD-10-CM code?

No. M86 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does M86 sit in the tabular list?

Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other osteopathies (M86-M90).

What cannot be coded together with M86?

M86 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

M86

M86 — Osteomyelitis

Non-billable headerICD-10-CM

M86 is a non-billable header ICD-10-CM code for osteomyelitis. 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.

osteomyelitis due to:
echinococcus (B67.2)
gonococcus (A54.43)
salmonella (A02.24)

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

ostemyelitis of:
orbit (H05.0-)
petrous bone (H70.2-)
vertebra (M46.2-)

Use additional code

Add a secondary code to capture the detail described below.

code (B95-B97) to identify infectious agent
code to identify major osseous defect, if applicable (M89.7-)

Risk adjustment

M86 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 M86

9 child codes. Green means billable.

Questions about M86

Is M86 a billable ICD-10-CM code?: No. M86 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does M86 sit in the tabular list?: Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Other osteopathies (M86-M90).
What cannot be coded together with M86?: M86 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.