C94.6 — Myelodysplastic disease, not elsewhere classified
Is C94.6 billable?
Yes, but C94.6 is an unspecified code. C94.6 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, C94.6 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting C94.6 — the more specific alternatives are listed below.
C94.6 at a glance
| Code | C94.6 |
|---|---|
| Description | Myelodysplastic disease, not elsewhere classified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C94.6 group to?
C94.6 sits in MDC 17 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.
- 820Lymphoma and Leukemia with Major O.R. Procedures with MCCsurgical
- 821Lymphoma and Leukemia with Major O.R. Procedures with CCsurgical
- 822Lymphoma and Leukemia with Major O.R. Procedures without CC/MCCsurgical
As a secondary diagnosis, C94.6 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is C94.6 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to C94.6. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Disease, diseased › myelodysplastic
- Disease, diseased › myelodysplastic/myeloproliferative neoplasm, unclassifiable
- Neoplasm, neoplastic › myelodysplastic/myeloproliferative, unclassifiable
- Disease, diseased › myeloproliferative › not classified
- Disease, diseased › myeloproliferative › specified NEC
- Disease, diseased › myeloproliferative › unclassifiable
Inclusion terms
Alternative wording in documentation that is classified to C94.6.
- Myelodysplastic/myeloproliferative neoplasm, unclassifiable
- Myeloproliferative disease, not elsewhere classified
Excludes1 — never code together — inherited from C94
The conditions below can never be reported together with C94.6 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from C81-C96
The conditions below are not part of C94.6, but a patient may have both at the same time. When documentation supports it, C94.6 and the excluded code may both be reported.
How long has C94.6 existed?
C94.6 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
- FY2023Myelodysplastic disease, not classifiedMyelodysplastic disease, not elsewhere classified
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.