AutoICD API

I33.9

Billable

Acute and subacute endocarditis, unspecified

Acute and subacute endocarditis, unspecified

Status

Billable / Specific

Block

I30-I5A

Parent Code

I33

ICD-11 Mapping

1 equivalent

Coding Notes

Related Codes(1)
ICD-11 Equivalents(1)

ICD-11 Equivalents

View full mapping

Corresponding ICD-11 codes from the WHO crosswalk mapping

Also Known As / Clinical Terms(78)

Clinical Terms

  • Subacute endocarditis
  • Embolism due to non-infective heart valve vegetations
  • Acute endocarditis
  • Acute endocarditis (disorder)
  • Subacute pericarditis
  • Abscess at site of interatrial communication
  • Acute periendocarditis NOS
  • subacute infective endocarditis
  • Abscess of cardiac septum
  • Subacute periendocarditis (disorder)
  • Subacute myoendocarditis NOS
  • Heart disease co-occurrent with human immunodeficiency virus infection
  • Acute periendocarditis (disorder)
  • Abscess at site of ventricular septal defect
  • Subacute myoendocarditis (disorder)
  • Acute endocarditis NOS
  • Embolism from non-infective heart valve vegetations
  • Acute myoendocarditis
  • Subacute endocarditis (disorder)
  • Acute endopericarditis
  • Subacute periendocarditis
  • Acute myoendocarditis NOS
  • Subacute periendocarditis NOS
  • Acute endocarditis co-occurrent with human immunodeficiency virus infection
  • Subacute endocarditis NOS
  • Acute nonbacterial endocarditis
  • Subacute myoendocarditis
  • Acute myoendocarditis (disorder)
  • Subacute endopericarditis
  • Acute periendocarditis
  • Acute endocarditis, unspecified
  • Acute myocarditis
Frequently Asked Questions
What is the ICD-10 code for acute and subacute endocarditis, unspecified?

The ICD-10-CM code for acute and subacute endocarditis, unspecified is I33.9. The full clinical description is "Acute and subacute endocarditis, unspecified". I33.9 is a billable/specific code that can be used on insurance claims and medical billing.

What does ICD-10 code I33.9 mean?

ICD-10-CM code I33.9 represents “Acute and subacute endocarditis, unspecified”. It is classified under Chapter 9: Diseases of the Circulatory System and is a billable/specific code that can be used on a claim.

Is I33.9 a billable code?

Yes, I33.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.

What chapter is I33.9 in?

I33.9 is in Chapter 9: Diseases of the Circulatory System (codes I00-I99).

What codes cannot be used with I33.9?

I33.9 has Excludes1 notes indicating codes that cannot be used together with it, including: acute rheumatic endocarditis (I01.1); endocarditis NOS (I38).

What SNOMED CT codes does I33.9 map to?

I33.9 maps to 15 SNOMED CT concepts: 459177003, 459161004, 405548009, 91357005, 713511002, and 10 more. SNOMED CT is a clinical terminology used in electronic health records.

What are the UMLS CUIs for I33.9?

I33.9 is linked to 7 UMLS Concept Unique Identifiers: C0375268, C0155683, C0264874, C0264872, C0264863, and 2 more. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

How does I33.9 relate to ICF functioning codes?

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like acute and subacute endocarditis, unspecified affect a person's functioning: body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

What is the ICD-11 equivalent of I33.9?

I33.9 maps to the ICD-11 code: BB4Z (Acute or subacute endocarditis, unspecified).

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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.