R09.0 — Asphyxia and hypoxemia
R09.0 is a non-billable header ICD-10-CM code for asphyxia and hypoxemia. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- hypercapnia (R06.89)
Excludes1 inherited from the categories above R09.0
These are not written on R09.0, but they bind it: a note on a category applies to every code beneath it. Billing R09.0 with anything listed here is a denial.
Other codes that can never be billed with R09.0
These codes carry an Excludes1 note pointing at R09.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading R09.0 alone.
- T71Asphyxiation
Risk adjustment
R09.0 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.
Code history
R09.0 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead R09.0
2 child codes. Green means billable.
Related codes at this level
Codes that share R09. If R09.0 is not quite right, the correct code is usually one of these.
Questions about R09.0
- Is R09.0 a billable ICD-10-CM code?
- No. R09.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does R09.0 sit in the tabular list?
- Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99), in the block Symptoms and signs involving the circulatory and respiratory systems (R00-R09).
- What cannot be coded together with R09.0?
- R09.0 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above R09.0 (R09) and apply to it just the same.