T41
Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 8 never code together
T41code
Excludes1
- benzodiazepines (T42.4-)T42.4-T42.4-T42.4-
- cocaine (T40.5-)T40.5-T40.5-T40.5-
- complications of anesthesia during pregnancy (O29.-)O29.-O29.-O29.-
- complications of anesthesia during labor and delivery (O74.-)O74.-O74.-O74.-
- complications of anesthesia during the puerperium (O89.-)O89.-O89.-O89.-
- opioids (T40.0-T40.2-)T40.0-T40.2T40.0-T40.2T40.0-T40.2
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
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 filed at null
No alphabetic index entry points at this code.
Subordinate codes 6
Medications 2
24 Extravasation of Diagnostic and Therapeutic Materials drugs 3319 Drug-Related Side Effects and Adverse Reactions 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.