Other heart disorders in diseases classified elsewhere (I52) ICD-10-CM
The I52 code range covers other heart disorders in diseases classified elsewhere with 1 ICD-10-CM diagnosis codes. 1 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
- underlying disease, such as:
- congenital syphilis A50.5
- mucopolysaccharidosis E76.3
- schistosomiasis B65.0 B65.9
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the I52 Range 1 codes · 1 billable
- I52 Other heart disorders in diseases classified elsewhere
About the I52 Code Range
The ICD-10 code I52 covers a variety of heart conditions that are secondary to other diseases classified elsewhere, rather than primary heart diseases. These codes are used specifically for heart disorders caused by systemic or non-cardiac diseases.
The code I52 is essential for documenting heart issues arising from conditions like systemic lupus erythematosus or diffuse coronary artery diseases. It includes terms such as luminal irregularities of coronary artery, mild intimal coronary irregularities without significant stenoses, and restenotic lesion of coronary artery. This means if a patient has heart involvement due to another condition—like an ulcerated artery or subpulmonary stenosis—the ICD-10 code for other heart disorders in diseases classified elsewhere helps precisely capture that clinical scenario. For medical coders seeking the ICD-10 code for heart disorders linked to systemic conditions, I52 clearly differentiates these instances from primary cardiac diseases, ensuring accurate classification and treatment documentation.
Questions About This Page
How many billable codes are in the I52 range?
Of the 1 codes in this range, 1 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the I52 range classify?
The range classifies other heart disorders in diseases classified elsewhere. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
