R45.84 — Anhedonia
Is R45.84 billable?
Yes — R45.84 is billable for FY2027. R45.84 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. R45.84 may be submitted for encounters from October 1, 2026 through September 30, 2027.
R45.84 at a glance
| Code | R45.84 |
|---|---|
| Description | Anhedonia |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does R45.84 group to?
R45.84 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
How is R45.84 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to R45.84. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Anhedonia
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R45.84, but a patient may have both at the same time. When documentation supports it, R45.84 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R40-R46
The conditions below are not part of R45.84, but a patient may have both at the same time. When documentation supports it, R45.84 and the excluded code may both be reported.
- symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
How long has R45.84 existed?
R45.84 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.