T50.91

Header — not billable

Poisoning by, adverse effect of and underdosing of multiple unspecified drugs, medicaments and biological substances

The ICD-10 code for poisoning by, adverse effect of and underdosing of multiple unspecified drugs, medicaments and biological substances is T50.91.

T50.91 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 more specific codes below.

Clinical notes

Code also

Two codes may be needed to fully describe a condition, but unlike Code First/Use Additional Code, the sequencing order is not mandated by convention.

any specific drugs, medicaments and biological substances

Also known as

Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.

Multiple drug ingestion NOS

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
•This code describes an unspecified presentation. If the medical record documents a more specific detail (e.g. laterality, type, or affected site), a more specific sibling code should be used instead — see Related codes below.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

Child codes under T50.91

Related codes in this category

T50.90Poisoning by, adverse effect of and underdosing of unspecified drugs, medicaments and biological substancesnon-billable header
T50.99Poisoning by, adverse effect of and underdosing of other drugs, medicaments and biological substancesnon-billable header
T50.91Poisoning by, adverse effect of and underdosing of multiple unspecified drugs, medicaments and biological substancesnon-billable header