I25.42 — Coronary artery dissection
Is I25.42 billable?
Yes — I25.42 is billable for FY2027. I25.42 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. I25.42 may be submitted for encounters from October 1, 2026 through September 30, 2027.
I25.42 at a glance
| Code | I25.42 |
|---|---|
| Description | Coronary artery dissection |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does I25.42 group to?
I25.42 sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 314Other Circulatory System Diagnoses with MCCmedical
- 315Other Circulatory System Diagnoses with CCmedical
- 316Other Circulatory System Diagnoses without CC/MCCmedical
As a secondary diagnosis, I25.42 is a major complication or comorbidity (MCC), which can move a stay into a higher-paying DRG.
How is I25.42 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I25.42. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Dissection › artery › coronary
Use additional code — inherited from I25
Report an additional code alongside I25.42 to fully describe the condition. I25.42 is sequenced first.
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I25.42, but a patient may have both at the same time. When documentation supports it, I25.42 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.-)
Excludes2 — not included here — inherited from I25
The conditions below are not part of I25.42, but a patient may have both at the same time. When documentation supports it, I25.42 and the excluded code may both be reported.
- non-ischemic myocardial injury (I5A)
Code also — inherited from I20-I25
Two codes may be needed to describe the condition fully. Whether I25.42 is sequenced first depends on the reason for the encounter.
- the presence of hypertension (I10-I1A)
How long has I25.42 existed?
I25.42 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.