R64 — Cachexia
Is R64 billable?
Yes — R64 is billable for FY2027. R64 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. R64 may be submitted for encounters from October 1, 2026 through September 30, 2027.
R64 at a glance
| Code | R64 |
|---|---|
| Description | Cachexia |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does R64 group to?
R64 sits in MDC 23 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.
- 947Signs and Symptoms with MCCmedical
- 948Signs and Symptoms without MCCmedical
As a secondary diagnosis, R64 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is R64 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to R64. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Cachexia
- Emaciation
- Inanition
- Cachexia › cancerous
- Cachexia › malignant
- Cachexia › pulmonary
Excludes1 — never code together
The conditions below can never be reported together with R64 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 Chapter 18
The conditions below are not part of R64, but a patient may have both at the same time. When documentation supports it, R64 and the excluded code may both be reported.
How long has R64 existed?
R64 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.
Which codes are confused with R64?
ICD-10-CM declares these codes mutually exclusive with R64 — exactly one of each pair can be correct for a given encounter.