MCMedicalCodingSoftware
A77

A77: Spotted fever [tick-borne rickettsioses]

Non-billable headerICD-10-CM

A77 is a non-billable header ICD-10-CM code for spotted fever [tick-borne rickettsioses]. It cannot be billed on its own: choose one of the more specific child codes below.

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 A77

7 child codes. Green means billable.

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.