R45.850 — Homicidal ideations
Is R45.850 billable?
Yes — R45.850 is billable for FY2027. R45.850 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. R45.850 may be submitted for encounters from October 1, 2026 through September 30, 2027.
R45.850 at a glance
| Code | R45.850 |
|---|---|
| Description | Homicidal ideations |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to R45.850?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name R45.850 directly.
CMS will reject this code as the principal diagnosis on an inpatient claim. It describes something other than the condition chiefly responsible for the admission.
Which MS-DRGs does R45.850 group to?
R45.850 sits in MDC 23 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.
- 951Other Factors Influencing Health Statusmedical
How is R45.850 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to R45.850. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Ideation › homicidal
Excludes1 — never code together — inherited from R45.85
The conditions below can never be reported together with R45.850 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- suicide attempt (T14.91)
Excludes2 — not included here — inherited from Chapter 18
The conditions below are not part of R45.850, but a patient may have both at the same time. When documentation supports it, R45.850 and the excluded code may both be reported.
Excludes2 — not included here — inherited from R40-R46
The conditions below are not part of R45.850, but a patient may have both at the same time. When documentation supports it, R45.850 and the excluded code may both be reported.
- symptoms and signs constituting part of a pattern of mental disorder (F01-F99)
How long has R45.850 existed?
R45.850 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.