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J16.0

J16.0: Chlamydial pneumonia

Billable / specific codeICD-10-CM

J16.0 is a billable, specific ICD-10-CM code for chlamydial pneumonia. It is valid for submission on a claim.

Check J16.0 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above J16.0

A category’s note binds every code beneath it.

Written on J16: Pneumonia due to other infectious organisms, not elsewhere classified

  • congenital pneumonia (P23.-)
  • ornithosis (A70)
  • pneumocystosis (B59)
  • pneumonia NOS (J18.9)

Other codes that can never be billed with J16.0

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • J15Bacterial pneumonia, not elsewhere classified
  • J17Pneumonia in diseases classified elsewhere

Risk adjustment

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

Medicare coverage

J16.0 is named in 10 Medicare coverage policies: 10 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52466Nebulizers - Policy Article
  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
  • A56730Billing and Coding: Respiratory Therapy and Oximetry Services

Alphabetic index entries that lead here

  • Pneumonia›chlamydial
  • Pneumonia›in›Chlamydia

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under J16

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.