A74

Non-billable

Other diseases caused by chlamydiae

A74 is the ICD-10-CM code for Other diseases caused by chlamydiae. It is a non-billable category code — use a more specific child code such as A74.0 for billing.

Status
Header (non-billable)
Chapter
A00-B99
Subcodes
3
Edition
FY2026

A00-B99 Certain infectious and parasitic diseases

Excludes1 — not coded here

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

Excludes2 — not included here

  • chlamydial pneumonia (J16.0)

Frequently asked questions

What is ICD-10 code A74?
A74 is the ICD-10-CM code for "Other diseases caused by chlamydiae". It falls under A00-B99 Certain infectious and parasitic diseases.
Is A74 a billable code?
No — A74 is a non-billable header code. Use a more specific child code (such as A74.0) for billing.
What are the subcodes of A74?
A74 has 3 more specific child codes, including A74.0, A74.8, A74.9.
What is excluded from A74?
Excludes1 (not coded here): neonatal chlamydial conjunctivitis (P39.1); neonatal chlamydial pneumonia (P23.1); Reiter's disease (M02.3-); sexually transmitted chlamydial diseases (A55-A56).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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