All ICD10 Codes

I51

Non-Billable
ChapterI00–I99
Rankcategory
Official Description

Complications and ill-defined descriptions of heart disease

Use a more specific code (8 billable, 1 non-billable)
I51.0Cardiac septal defect, acquiredI51.1Rupture of chordae tendineae, not elsewhere classifiedI51.2Rupture of papillary muscle, not elsewhere classifiedI51.3Intracardiac thrombosis, not elsewhere classifiedI51.4Myocarditis, unspecifiedI51.5Myocardial degenerationI51.7CardiomegalyI51.8Other ill-defined heart diseaseshas subcodesI51.9Heart disease, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 9: Diseases of the Circulatory System (I00-I99).

CH9 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • systemic connective tissue disorders (M30-M36)
  • transient cerebral ischemic attacks and related syndromes (G45.-)

Instructional Notes

Excludes2(Not included here. Code separately if applicable.)
  • heart disease specified as rheumatic (I00-I09)

Clinical Hierarchy

BillableHas subcodes
CH9Diseases of the circulatory system (I00-I99)
I30-I5AOther forms of heart disease (I30-I5A)
I51Complications and ill-defined descriptions of heart diseaseNot billable
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
I51.4Myocarditis, unspecifiedBillable
I51.5Myocardial degenerationBillable
I51.7CardiomegalyBillable
I51.8Other ill-defined heart diseasesSubcodes
I51.9Heart disease, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I51:

chapterCH9
Diseases of the circulatory system (I00-I99)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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