F16.183 — Hallucinogen abuse with hallucinogen persisting perception disorder (flashbacks)
Is F16.183 billable?
Yes — F16.183 is billable for FY2027. F16.183 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. F16.183 may be submitted for encounters from October 1, 2026 through September 30, 2027.
F16.183 at a glance
| Code | F16.183 |
|---|---|
| Description | Hallucinogen abuse with hallucinogen persisting perception disorder (flashbacks) |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does F16.183 group to?
F16.183 sits in MDC 20 and helps define the logic of 4 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 894Alcohol, Drug Abuse or Dependence, Left AMAmedical
- 895Alcohol, Drug Abuse or Dependence with Rehabilitation Therapymedical
- 896Alcohol, Drug Abuse or Dependence without Rehabilitation Therapy with MCCmedical
- 897Alcohol, Drug Abuse or Dependence without Rehabilitation Therapy without MCCmedical
How is F16.183 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to F16.183. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Disorder › perception, due to hallucinogens › in › abuse (of)
- Disorder › posthallucinogen perception › in › abuse (of)
- Abuse › drug NEC › hallucinogen › with › flashbacks
- Abuse › drug NEC › hallucinogen › with › perception disorder, persisting
Excludes1 — never code together — inherited from F16.1
The conditions below can never be reported together with F16.183 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 5
The conditions below are not part of F16.183, but a patient may have both at the same time. When documentation supports it, F16.183 and the excluded code may both be reported.
- symptoms, signs and abnormal clinical laboratory findings, not elsewhere classified (R00-R99)
How long has F16.183 existed?
F16.183 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.