Coding and coverage · ICD-10-CM

T41

T41.3 Poisoning by, adverse effect of and underdosing of local anesthetics

Not billable (header)Chapter 19

This code needs a 7th character (use X as a placeholder for missing characters).

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Codes under this one

  • T41.3X Poisoning by, adverse effect of and underdosing of local anestheticsHeader

Instructional notes

Chapter 19

Excludes2Not included here: the patient may have both; report both when both are present.
Use additional codeAdd a second code for the full picture.
  • code to identify any retained foreign body, if applicable (Z18.-)
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.

T41

Excludes1Not coded here: never report with this code, except when the two conditions are unrelated.
  • benzodiazepines (T42.4-)
  • cocaine (T40.5-)
  • complications of anesthesia during pregnancy (O29.-)
  • complications of anesthesia during labor and delivery (O74.-)
  • complications of anesthesia during the puerperium (O89.-)
  • opioids (T40.0-T40.2-)
7th charactersThe appropriate 7th character is to be added to each code from category T41
  • A initial encounter
  • D subsequent encounter
  • S sequela

This code

Excludes2Not included here: the patient may have both; report both when both are present.
  • poisoning by cocaine used as a central nervous system stimulant (T40.5X1-T40.5X4)
Inclusion terms
  • Cocaine (topical)

Chapter 19: Injury, poisoning and certain other consequences of external causes · T07-T88 Injury, poisoning and certain other consequences of external causes (T07-T88)

Source: ICD-10-CM FY 2027 code descriptions and tabular list (CMS and CDC National Center for Health Statistics), effective 2026-10-01 through 2027-09-30 · CMS ICD-10 files. HCC mapping: CMS-HCC V28, payment year 2027. As of 2026-11-04.

Coverage and payment depend on the claim details; confirm with the Medicare Administrative Contractor.