MCMCB Pro
J22

J22Unspecified acute lower respiratory infection

Billable / specific codeICD-10-CM

J22 is a billable, specific ICD-10-CM code for unspecified acute lower respiratory infection. It is valid for submission on a claim.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • upper respiratory infection (acute) (J06.9)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Acute (lower) respiratory (tract) infection NOS

Other codes that can never be billed with J22

These codes carry an Excludes1 note pointing at J22. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading J22 alone.

  • J06Acute upper respiratory infections of multiple and unspecified sites
  • J39Other diseases of upper respiratory tract

Risk adjustment

J22 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

J22 is named in 8 Medicare coverage policies 8 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
  • A58575Billing and Coding: Respiratory Pathogen Panel Testing
  • A58577Billing and Coding: Respiratory Pathogen Panel Testing
  • A58710Billing and Coding: MolDX: Molecular Syndromic Panels for Infectious Disease Pathogen Identification Testing

How J22 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to J22.

  • Infection, infected, infectivechest
  • Infection, infected, infectiverespiratory NECacute
  • Infection, infected, infectiverespiratory NEClower(acute)

Questions about J22

Is J22 a billable ICD-10-CM code?
Yes. J22 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does J22 sit in the tabular list?
Diseases of the respiratory system (J00-J99), in the block Other acute lower respiratory infections (J20-J22).
What cannot be coded together with J22?
J22 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 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.