MCMedicalCodingSoftware
A74.89

A74.89: Other chlamydial diseases

Billable / specific codeICD-10-CM

A74.89 is a billable, specific ICD-10-CM code for other chlamydial diseases. It is valid for submission on a claim.

Check A74.89 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above A74.89

A category’s note binds every code beneath it.

Written on A74: Other diseases caused by chlamydiae

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

Excludes2 inherited from the categories above A74.89

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

Written on A74: Other diseases caused by chlamydiae

  • chlamydial pneumonia (J16.0)

Risk adjustment

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

Alphabetic index entries that lead here

  • Chlamydia, chlamydial›specified NEC
  • Disease, diseased›chlamydial›specified NEC

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under A74.8

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.