ICD-10-CM 2027
ICD-10 code for hypercapnia
From the official ICD-10-CM alphabetic index entry “Hypercapnia”. Page updated September 29, 2026.
About coding hypercapnia
The ICD-10-CM code for hypercapnia is R06.89 (Other abnormalities of breathing). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on R06.89.
Within R06.8, choose R06.89 (Other abnormalities of breathing) only when documentation doesn't support a more specific option: apnea, not elsewhere classified (R06.81), tachypnea, not elsewhere classified (R06.82) and Snoring (R06.83).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 204 (Respiratory Signs and Symptoms, relative weight 0.821), 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.
More specific hypercapnia codes (official index)
- newborn P84 — Other problems with newborn
Common questions about hypercapnia ICD-10 codes
What is the ICD-10 code for hypercapnia?
- R06.89 — Other abnormalities of breathing. More specific codes apply when the documentation supports them: P84.
What is the ICD-10 code for newborn hypercapnia?
- P84 — Other problems with newborn.
Is R06.89 billable?
- Yes. R06.89 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R06.89 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R06.89 as a principal diagnosis.
Is R06.89 a CC or MCC?
- No. R06.89 is neither a CC nor an MCC under MS-DRG v44.0.