A74 Other diseases caused by chlamydiae

Category / Non-billable header 5 subcodes

Block: Other diseases caused by chlamydiae (A70-A74)

Excludes 1 (cannot be coded together)

  • neonatal chlamydial conjunctivitis (P39.1)
  • neonatal chlamydial pneumonia (P23.1)
  • Reiter's disease (M02.3-)
  • sexually transmitted chlamydial diseases (A55-A56)

Excludes 2 (not included here)

  • chlamydial pneumonia (J16.0)

Subcodes

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

Code Description Billable
A74..0 Chlamydial conjunctivitis Yes
A74..8 Other chlamydial diseases No
A74..81 Chlamydial peritonitis Yes
A74..89 Other chlamydial diseases Yes
A74..9 Chlamydial infection, unspecified Yes

Last reviewed: September 2026