ICD-10-CM · Chapter 1 · A00-B99

B99 Other and unspecified infectious diseases

Category / Non-billable header 2 subcodes

Block: Other infectious diseases (B99)

Subcodes

Each subcode links to a detail page with full clinical annotations.

Code	Description	Billable
B99..8	Other infectious disease	Yes
B99..9	Unspecified infectious disease	Yes

Last reviewed: September 2026