2021 ICD-10-CM Diagnosis Code T65.91

Toxic effect of unspecified substance, accidental (unintentional)

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • T65.91 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Toxic effect of unsp substance, accidental (unintentional)
  • The 2021 edition of ICD-10-CM T65.91 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of T65.91 - other international versions of ICD-10 T65.91 may differ.
Applicable To
  • Poisoning NOS
The following code(s) above T65.91 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to T65.91:
  • S00-T88
    2021 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    Note
    • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
  • T51-T65
    2021 ICD-10-CM Range T51-T65

    Toxic effects of substances chiefly nonmedicinal as to source

    Note
    • When no intent is indicated code to accidental. Undetermined intent is only for use when there is specific documentation in the record that the intent of the toxic effect cannot be determined.
    Type 1 Excludes
    • contact with and (suspected) exposure to toxic substances (Z77.-)
    Use Additional
    • code(s):
    • for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)
    • personal history of foreign body fully removed (Z87.821)
    • to identify any retained foreign body, if applicable (Z18.-)
    Toxic effects of substances chiefly nonmedicinal as to source
Clinical Information
  • A condition or physical state produced by the ingestion, injection, inhalation of or exposure to a deleterious agent.
  • A poison is any substance that is harmful to your body. You might swallow it, inhale it, inject it or absorb it through your skin. Poisons can include
    • prescription or over-the-counter medicines taken in doses that are too high
    • overdoses of illegal drugs
    • carbon monoxide from gas appliances
    • household products, such as laundry powder or furniture polish
    • pesticides
    • indoor or outdoor plants
    • metals such as lead and mercury
    the dangers of poisoning range from short-term illness to brain damage, coma and death. To prevent poisoning it is important to use and store products exactly as their labels say. Keep dangerous products where children can't get to them. Treatment for poisoning depends on the type of poison. If you suspect someone has been poisoned, call your local poison control center right away.
  • Condition or physical state produced by the ingestion, injection or inhalation of, or exposure to a deleterious agent.
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to T65.91:

ICD-10-CM Codes Adjacent To T65.91
T65.892S …… sequela
T65.893 Toxic effect of other specified substances, assault
T65.893A …… initial encounter
T65.893D …… subsequent encounter
T65.893S …… sequela
T65.894 Toxic effect of other specified substances, undetermined
T65.894A …… initial encounter
T65.894D …… subsequent encounter
T65.894S …… sequela
T65.9 Toxic effect of unspecified substance
T65.91 Toxic effect of unspecified substance, accidental (unintentional)
T65.91XA …… initial encounter
T65.91XD …… subsequent encounter
T65.91XS …… sequela
T65.92 Toxic effect of unspecified substance, intentional self-harm
T65.92XA …… initial encounter
T65.92XD …… subsequent encounter
T65.92XS …… sequela
T65.93 Toxic effect of unspecified substance, assault
T65.93XA …… initial encounter
T65.93XD …… subsequent encounter

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.