ICD-10-CM Diagnosis Code (2025)
Official Description for I33.9
Acute and subacute endocarditis, unspecified
Coding Notes & Guidelines for I33.9
Inclusion Terms
- Acute endocarditis NOS
- Acute myoendocarditis NOS
- Acute periendocarditis NOS
- Subacute endocarditis NOS
- Subacute myoendocarditis NOS
- Subacute periendocarditis NOS
Parent Code (Less Specific):
About ICD-10-CM Code I33.9 (Acute and subacute endocarditis)
ICD-10-CM code I33.9 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM I33.9 became effective on October 1, 2024.
This page provides detailed information about I33.9 - Acute and subacute endocarditis, unspecified. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Acute and subacute endocarditis related to unspecified.