ICD-10-CM 2027
ICD-10 code for pathological asphyxia
From the official ICD-10-CM alphabetic index entry “Asphyxia, asphyxiation (by) › pathological”. Page updated September 29, 2026.
About coding pathological asphyxia
The ICD-10-CM code for pathological asphyxia is R09.01 (Asphyxia).
Within R09.0 (asphyxia and hypoxemia), R09.01 is specifically for asphyxia. Related codes cover hypoxemia (R09.02).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 205 (Other Respiratory System Diagnoses with MCC, relative weight 1.8244) and DRG 206 (Other Respiratory System Diagnoses without MCC, relative weight 0.9257), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about pathological asphyxia ICD-10 codes
What is the ICD-10 code for pathological asphyxia?
- R09.01 — Asphyxia.
Is R09.01 billable?
- Yes. R09.01 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R09.01 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R09.01 as a principal diagnosis.
Is R09.01 a CC or MCC?
- R09.01 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.