I52 — Other heart disorders in diseases classified elsewhere
Is I52 billable?
Yes — I52 is billable for FY2027. I52 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. I52 may be submitted for encounters from October 1, 2026 through September 30, 2027.
I52 at a glance
| Code | I52 |
|---|---|
| Description | Other heart disorders in diseases classified elsewhere |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to I52?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name I52 directly.
This code describes a manifestation of an underlying disease. The underlying condition must be sequenced before it, so it can never be the principal or first-listed diagnosis.
Which MS-DRGs does I52 group to?
I52 sits in MDC 05 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 302Atherosclerosis with MCCmedical
- 303Atherosclerosis without MCCmedical
How is I52 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I52. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Cardiopathy › mucopolysaccharidosis
- Mucopolysaccharidosis › cardiopathy
- Syphilis, syphilitic › heart (acquired)
- Disease, diseased › heart › pulmonary › in schistosomiasis
- Disease, diseased › heart › syphilitic › congenital
- Narrowing › artery › coronary › congenital › syphilitic
Excludes1 — never code together
The conditions below can never be reported together with I52 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first
The underlying condition below must be sequenced before I52. I52 describes a manifestation and cannot be the principal or first-listed diagnosis.
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I52, but a patient may have both at the same time. When documentation supports it, I52 and the excluded code may both be reported.
- 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.-)
How long has I52 existed?
I52 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.