I51.4

Myocarditis, unspecified

Billable / specificHCC V28 227

I51.4 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Chronic (interstitial) myocarditis
  • Myocardial fibrosis
  • Myocarditis NOS

Excludes1

Not coded here — never report together with this code.

  • acute or subacute myocarditis (I40.-)

Excludes2

Not included here — may be reported together when both conditions exist.

  • certain conditions originating in the perinatal period (P04-P96) (from I51)
  • certain infectious and parasitic diseases (A00-B99) (from I51)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from I51)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from I51)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from I51)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from I51)
  • neoplasms (C00-D49) (from I51)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from I51)
  • systemic connective tissue disorders (M30-M36) (from I51)
  • transient cerebral ischemic attacks and related syndromes (G45.-) (from I51)
  • heart disease specified as rheumatic (I00-I09) (from I51)

Also known as

  • Chronic (interstitial) myocarditis
  • Myocardial fibrosis
  • Myocarditis NOS
  • Acardiotrophia
  • Arteriosclerosis, arteriosclerotic, myocarditis
  • Myocarditis

Parent code

  • I51Complications and ill-defined descriptions of heart diseaseHeader

Related codes

  • I51.0Cardiac septal defect, acquiredBillable
  • I51.1Rupture of chordae tendineae, not elsewhere classifiedBillable
  • I51.2Rupture of papillary muscle, not elsewhere classifiedBillable
  • I51.3Intracardiac thrombosis, not elsewhere classifiedBillable
  • I51.5Myocardial degenerationBillable
  • I51.7CardiomegalyBillable
  • I51.8Other ill-defined heart diseasesHeader
  • I51.9Heart disease, unspecifiedBillable

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