I42.09 — Other dilated cardiomyopathy
Is I42.09 billable?
Yes — I42.09 is billable for FY2027. I42.09 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. I42.09 may be submitted for encounters from October 1, 2026 through September 30, 2027. I42.09 is new in FY2027.
I42.09 at a glance
| Code | I42.09 |
|---|---|
| Description | Other dilated cardiomyopathy |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| FY2027 change | New in FY2027 |
Which MS-DRGs does I42.09 group to?
I42.09 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, I42.09 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is I42.09 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to I42.09. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Cardiomyopathy › dilated › specifiedNEC (familial) (idiopathic)
Inclusion terms
Alternative wording in documentation that is classified to I42.09.
- Other nonfamilial dilated cardiomyopathy
Code first — inherited from I42
The underlying condition below must be sequenced before I42.09. I42.09 describes a manifestation and cannot be the principal or first-listed diagnosis.
- pre-existing cardiomyopathy complicating pregnancy and puerperium (O99.4)
Excludes2 — not included here — inherited from Chapter 9
The conditions below are not part of I42.09, but a patient may have both at the same time. When documentation supports it, I42.09 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 I42
The conditions below are not part of I42.09, but a patient may have both at the same time. When documentation supports it, I42.09 and the excluded code may both be reported.