M86.8X80: Other osteomyelitis, skull

New code · FY2027

Billable: use this code on claims.

• New code, effective October 1, 2026 (FY2027). Before that, this condition was coded as M86.8X8.

Code breakdown

Coding notes

Inclusion terms (from M86.8)

• Brodie's abscess

Medicare coverage

M86.8X80 is listed as a covered diagnosis in 1 Medicare billing and coding article:

• A57204 Billing and Coding: MRI and CT Scans of the Head and Neck

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All FY2027 ICD-10-CM changes

ICD-10-CM codes and descriptions are from the CMS and NCHS code files. Coverage is from the CMS Medicare Coverage Database billing and coding articles.