MCMedicalCodingSoftware
M86.42

M86.42: Chronic osteomyelitis with draining sinus, humerus

Non-billable headerICD-10-CM

M86.42 is a non-billable header ICD-10-CM code for chronic osteomyelitis with draining sinus, humerus. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 inherited from the categories above M86.42

A category’s note binds every code beneath it.

Written on M86: Osteomyelitis

Excludes2 inherited from the categories above M86.42

Not part of this code, but both may be coded when both are present.

Written on M86: Osteomyelitis

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead M86.42

3 child codes. Green means billable.

Other codes under M86.4

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.