T46.991A
Poisoning by other agents primarily affecting the cardiovascular system, accidental (unintentional), initial encounter
Billable FY2026 2025-10-01 → 2026-09-30
Exclusions 3 never code together
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 3
A initial encounter this code
D subsequent encounter
S sequela
Instructional notes 3
S00-T88chapter
Notes
- 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
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 2 filed at T46
Alongside this code 2 same parent — T46.991
Medications 5
1 Mercury Poisoning, Nervous System drugs 1 Lead Poisoning, Nervous System drugs 16 Heavy Metal Poisoning, Nervous System drugs 1 Lead Poisoning, Nervous System, Childhood drugs 148 Autoimmune Diseases of the Nervous System drugs
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.