R44.3 — Hallucinations, unspecified
Is R44.3 billable?
Yes, but R44.3 is an unspecified code. R44.3 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, R44.3 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 R44.3 — the more specific alternatives are listed below.
R44.3 at a glance
| Code | R44.3 |
|---|---|
| Description | Hallucinations, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does R44.3 group to?
R44.3 sits in MDC 19 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 880Acute Adjustment Reaction and Psychosocial Dysfunctionmedical
As a secondary diagnosis, R44.3 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is R44.3 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to R44.3. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Hallucination
Excludes1 — never code together — inherited from R44
The conditions below can never be reported together with R44.3 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 R44.3, but a patient may have both at the same time. When documentation supports it, R44.3 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R40-R46
The conditions below are not part of R44.3, but a patient may have both at the same time. When documentation supports it, R44.3 and the excluded code may both be reported.
- symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
Excludes2 — not included here — inherited from R44
The conditions below are not part of R44.3, but a patient may have both at the same time. When documentation supports it, R44.3 and the excluded code may both be reported.
- disturbances of skin sensation (R20.-)
How long has R44.3 existed?
R44.3 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.