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ICD10BillableValid for clinical use

ICD-10 Code I38: Endocarditis, valve unspecified

I38 is a billable ICD-10 diagnosis code used to classify Endocarditis, valve unspecified in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).

When is it used?

  • May be used when a clinician documents endocarditis, valve unspecified in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
9Diseases of the circulatory system (I00-I99)
block
I30-I5AOther forms of heart disease
currentI30-I5A

Official coding notes

Includes
  • endocarditis (chronic) NOS
  • valvular incompetence NOS
  • valvular insufficiency NOS
  • valvular regurgitation NOS
  • valvular stenosis NOS
  • valvulitis (chronic) NOS
Excludes1 (do not code together)
  • congenital insufficiency of cardiac valve NOS (Q24.8)
  • congenital stenosis of cardiac valve NOS (Q24.8)
  • endocardial fibroelastosis (I42.4)
  • endocarditis specified as rheumatic (I09.1)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

CardiologistGeneral Physician

Sibling codes

I30Acute pericarditisI31Other diseases of pericardiumI32Pericarditis in diseases classified elsewherebillableI33Acute and subacute endocarditisI34Nonrheumatic mitral valve disordersI35Nonrheumatic aortic valve disordersI36Nonrheumatic tricuspid valve disordersI37Nonrheumatic pulmonary valve disordersI39Endocarditis and heart valve disorders in diseases classified elsewherebillableI40Acute myocarditisI41Myocarditis in diseases classified elsewherebillableI42CardiomyopathyI43Cardiomyopathy in diseases classified elsewherebillableI44Atrioventricular and left bundle-branch blockI45Other conduction disordersI46Cardiac arrestI47Paroxysmal tachycardiaI48Atrial fibrillation and flutterI49Other cardiac arrhythmiasI50Heart failureI51Complications and ill-defined descriptions of heart diseaseI52Other heart disorders in diseases classified elsewherebillableI5ANon-ischemic myocardial injury (non-traumatic)billable

Coverage-related procedures and services

CPT 93325high
DOPPLER ECHOCARDIOGRAPHY COLOR FLOW VELOCITY MAPPING (LIST SEPARATELY IN ADDITION TO CODES FOR ECHOCARDIOGRAPHY)
Source: CMS coverage guidance
CPT 93320high
DOPPLER ECHOCARDIOGRAPHY, PULSED WAVE AND/OR CONTINUOUS WAVE WITH SPECTRAL DISPLAY (LIST SEPARATELY IN ADDITION TO CODES FOR ECHOCARDIOGRAPHIC IMAGING); COMPLETE
Source: CMS coverage guidance
CPT 93321high
DOPPLER ECHOCARDIOGRAPHY, PULSED WAVE AND/OR CONTINUOUS WAVE WITH SPECTRAL DISPLAY (LIST SEPARATELY IN ADDITION TO CODES FOR ECHOCARDIOGRAPHIC IMAGING); FOLLOW-UP OR LIMITED STUDY (LIST SEPARATELY IN ADDITION TO CODES FOR ECHOCARDIOGRAPHIC IMAGING)
Source: CMS coverage guidance
CPT 93318high
ECHOCARDIOGRAPHY, TRANSESOPHAGEAL (TEE) FOR MONITORING PURPOSES, INCLUDING PROBE PLACEMENT, REAL TIME 2-DIMENSIONAL IMAGE ACQUISITION AND INTERPRETATION LEADING TO ONGOING (CONTINUOUS) ASSESSMENT OF (DYNAMICALLY CHANGING) CARDIAC PUMPING FUNCTION AND TO THERAPEUTIC MEASURES ON AN IMMEDIATE TIME BASIS
Source: CMS coverage guidance
CPT 93314high
ECHOCARDIOGRAPHY, TRANSESOPHAGEAL, REAL-TIME WITH IMAGE DOCUMENTATION (2D) (WITH OR WITHOUT M-MODE RECORDING); IMAGE ACQUISITION, INTERPRETATION AND REPORT ONLY
Source: CMS coverage guidance
CPT 93312high
ECHOCARDIOGRAPHY, TRANSESOPHAGEAL, REAL-TIME WITH IMAGE DOCUMENTATION (2D) (WITH OR WITHOUT M-MODE RECORDING); INCLUDING PROBE PLACEMENT, IMAGE ACQUISITION, INTERPRETATION AND REPORT
Source: CMS coverage guidance

Mapped diagnoses and classifications

SNOMED_CT 459162006high
Abscess of common atrioventricular valve
Source: SNOMED International ICD-10 map
SNOMED_CT 458038006high
Abscess of truncal valve
Source: SNOMED International ICD-10 map
SNOMED_CT 880051003high
Acquired regurgitation of common atrioventricular valve following repair of biventricular connection
Source: SNOMED International ICD-10 map
SNOMED_CT 880048005high
Acquired regurgitation of left ventricular component of common atrioventricular valve following repair of biventricular connection
Source: SNOMED International ICD-10 map
SNOMED_CT 880049002high
Acquired regurgitation of right ventricular component of common atrioventricular valve following repair of biventricular connection
Source: SNOMED International ICD-10 map
SNOMED_CT 880047000high
Acquired stenosis of left ventricular component of common atrioventricular valve following repair of biventricular connection
Source: SNOMED International ICD-10 map

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
I38

Common synonyms

Endocarditis, valve unspecifiedEndocarditis, valve

Frequently asked questions

Code details

CodeI38
SystemICD10
Display nameEndocarditis, valve unspecified
ChapterDiseases of the circulatory system (I00-I99)
BlockOther forms of heart disease

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Disease, diseasedEndocarditis(chronic) (marantic) (nonbacterial) (thrombotic) (valvular)Endocarditis(chronic) (marantic) (nonbacterial) (thrombotic) (valvular)Hypertrophy, hypertrophicInsufficiency, insufficientStenosis, stenotic(cicatricial)Stenosis, stenotic(cicatricial)Stricture
See also
Endocarditis

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code I38 for Endocarditis, valve unspecified | HealthAssure