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R09.0

R09.0Asphyxia and hypoxemia

Non-billable headerICD-10-CM

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.

  • asphyxia due to carbon monoxide (T58.-)
  • asphyxia due to foreign body in respiratory tract (T17.-)
  • birth (intrauterine) asphyxia (P84)
  • hyperventilation (R06.4)
  • traumatic asphyxia (T71.-)

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.

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 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 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.