J22 — Unspecified acute lower respiratory infection
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.
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, infective›chest
- Infection, infected, infective›respiratory NEC›acute
- Infection, infected, infective›respiratory NEC›lower(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.