ICD-10-CM 2027
ICD-10 code for respiratory acidosis
From the official ICD-10-CM alphabetic index entry “Acidosis (lactic) › respiratory”. Page updated September 29, 2026.
About coding respiratory acidosis
The ICD-10-CM code for respiratory acidosis is E87.29 (Other acidosis). The official index lists 4 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on E87.29.
Within E87.2, choose E87.29 (Other acidosis) only when documentation doesn't support a more specific option: unspecified (E87.20), acute metabolic acidosis (E87.21) and chronic metabolic acidosis (E87.22).
The conditions in its Excludes2 note aren't part of E87.29, but may be coded alongside it if the patient has both: acute respiratory acidosis (J96.02) and chronic respiratory acidosis (J96.12).
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.
More specific respiratory acidosis codes (official index)
Common questions about respiratory acidosis ICD-10 codes
What is the ICD-10 code for respiratory acidosis?
- E87.29 — Other acidosis. More specific codes apply when the documentation supports them: J96.02, J96.12, E87.4, E87.4.
What is the ICD-10 code for acute respiratory acidosis?
- J96.02 — Acute respiratory failure with hypercapnia.
What is the ICD-10 code for chronic respiratory acidosis?
- J96.12 — Chronic respiratory failure with hypercapnia.
Is E87.29 billable?
- Yes. E87.29 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E87.29 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E87.29 as a principal diagnosis.
Is E87.29 a CC or MCC?
- E87.29 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.