DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

I52 diagnosis code · Billable category · FY2027

I52 Other heart disorders in diseases classified elsewhere

  • Billable
  • Not CC/MCC
  • POA reported

I52 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 9 Diseases of the circulatory system (I00-I99)
  2. I30-I5A Other forms of heart disease (I30-I5A)
  3. I52 Other heart disorders in diseases classified elsewhere
CC / MCC
Neither
MS-DRG
302-303
HCC V28
–
POA
Reported
Code Editor
Manifestation
Index entries
6

Instructions

At I52

Excludes1

  • heart disease (in):
  • gonococcal infection (A54.83) A54.83
  • meningococcal infection (A39.50) A39.50
  • rheumatoid arthritis (M05.31) M05.31
  • syphilis (A52.06) A52.06

Code first

  • underlying disease, such as:
  • congenital syphilis (A50.5) A50.5
  • mucopolysaccharidosis (E76.3) E76.3
  • schistosomiasis (B65.0-B65.9) B65.0 B65.9

Notes that also apply

Chapter 9 instructions (Excludes2 10): printed on the chapter 9 page.

Index entries

  • Syphilis, syphilitic (acquired)heart (block) (decompensation) (disease) (failure) → A52.06 [I52]
  • Cardiopathymucopolysaccharidosis → E76.3 [I52]
  • Mucopolysaccharidosiscardiopathy → E76.3 [I52]
  • Disease, diseasedheart (organic)syphiliticcongenital → A50.54 [I52]
  • Disease, diseasedheart (organic)pulmonary (chronic)in schistosomiasis → B65.9 [I52]
  • Narrowingarterycoronarycongenitalsyphilitic → A50.54 [I52]

NCHS Alphabetic Index. Index first, then the Tabular List.

Medicare grouping and edits

CMS files for I52
CC / MCCNeither
Appendix BMDC 05 Diseases and Disorders of the Circulatory System, MS-DRG 302-303 (Atherosclerosis with MCC…)
Code EditorManifestation code: not allowed as principal diagnosis
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy