2027 ICD-10-CM Diagnosis Code T41.204SPoisoning by unspecified general anesthetics, undetermined, sequela

ICD-10-CM T41.204S

CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

T41.204S is a billable ICD-10-CM diagnosis code for poisoning by unspecified general anesthetics, undetermined, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 922 through 923. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Poisoning/toxic effect/adverse effects/underdosing, sequela.

Code Identity

ICD-10-CM Code

T41.204S

Billable Status

Yes — Valid for Submission

Code Describes

Poisoning by unspecified general anesthetics, undetermined, sequela

Short Description

Poisoning by unsp general anesthetics, undetermined, sequela

Parent Code

T41.204

Poisoning by unspecified general anesthetics, undetermined

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes

SectionT36-T50Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances

CategoryT41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases

This CodeT41.204SPoisoning by unspecified general anesthetics, undetermined, sequela

Present on Admission (POA)Billing

T41.204S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances (T36-T50).

Coding GuidelinesGuidance

When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined). If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.

The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases (T41). Use the following options for the applicable episode of care:

A - initial encounter
D - subsequent encounter
S - sequela

Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027, published by CMS and the National Center for Health Statistics.

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to T41.204S: its own notes plus those printed at T41, block T36-T50, and Chapter 19. A note printed at a category, block or chapter applies to every code under it.