ICD-10-CM 2027
ICD-10 code for tamponade cardiac
From the official ICD-10-CM alphabetic index entry “Cardiac › tamponade”. Page updated September 29, 2026.
About coding tamponade cardiac
The ICD-10-CM code for tamponade cardiac is I31.4 (Cardiac tamponade).
Within I31 (other diseases of pericardium), I31.4 is specifically for cardiac tamponade. Related codes cover chronic adhesive pericarditis (I31.0), chronic constrictive pericarditis (I31.1), hemopericardium, not elsewhere classified (I31.2), pericardial effusion (noninflammatory) (I31.3), other specified diseases of pericardium (I31.8) and disease of pericardium, unspecified (I31.9).
Code first: underlying cause.
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.
Common questions about tamponade cardiac ICD-10 codes
What is the ICD-10 code for tamponade cardiac?
- I31.4 — Cardiac tamponade.
Is I31.4 billable?
- Yes. I31.4 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I31.4 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is I31.4 a CC or MCC?
- I31.4 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.