2025 ICD-10-CM code T40.995
Adverse effect of other psychodysleptics (hallucinogens).
Seventh character extensions are used to specify the encounter type: A (initial encounter), D (subsequent encounter), or S (sequela).
Medical necessity is established by the presence of adverse effects resulting from the use of a hallucinogen, requiring medical intervention.
Clinicians should document the specific hallucinogen involved, the nature of the adverse effect, and any related complications.
- T: Injury, poisoning and certain other consequences of external causes (S00-T88)
- T40-T49: Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
In simple words: Harmful reaction caused by using a hallucinogenic drug, like LSD or PCP.
Adverse effect of other psychodysleptics, such as LSD, PCP, and other hallucinogens, not elsewhere classified.
Example 1: A patient presents to the emergency department with hallucinations and anxiety after ingesting LSD., A patient experiences persistent flashbacks and psychosis following PCP use, requiring psychiatric care., A patient develops serotonin syndrome after combining a prescribed medication with a hallucinogenic drug.
Documentation should include the type of hallucinogen used, the route of administration, the time of ingestion, the presenting symptoms and signs, any associated medical conditions, and treatment provided.
** Excludes2: drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.-F19.-)
- Payment Status: Active
- Specialties:Emergency Medicine, Internal Medicine, Psychiatry, Toxicology
- Place of Service:Emergency Room - Hospital, Inpatient Hospital, Office, Outpatient Hospital, Telehealth Provided in Patient’s Home, Telehealth Provided Other than in Patient’s Home