T48 Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system is T48 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
T36-T50: Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
Category T48
79 codes (60 billable)
FY2026 Status
Stable since FY2024

Official Coding Guidelines

Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2
Do not assign injury codes for iatrogenic injuries; code complication

3) Iatrogenic injuries Injury codes from Chapter 19 should not be assigned for injuries that occur during, or as a result of, a medical intervention. Assign the appropriate complication code(s).

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.3

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference T48 with the canonical source and edition:

T48 — Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/T48

Canonical URL: https://icd10codingpro.com/codes/T48

Related Codes

All Codes in T48

Every most-specific code under T48 Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system (60 codes):

Show the complete T48 code list
T48.0X1 Poisoning by oxytocic drugs, accidental (unintentional) T48.0X2 Poisoning by oxytocic drugs, intentional self-harm T48.0X3 Poisoning by oxytocic drugs, assault T48.0X4 Poisoning by oxytocic drugs, undetermined T48.0X5 Adverse effect of oxytocic drugs T48.0X6 Underdosing of oxytocic drugs T48.1X1 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional) T48.1X2 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harm T48.1X3 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], assault T48.1X4 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], undetermined T48.1X5 Adverse effect of skeletal muscle relaxants [neuromuscular blocking agents] T48.1X6 Underdosing of skeletal muscle relaxants [neuromuscular blocking agents] T48.201 Poisoning by unspecified drugs acting on muscles, accidental (unintentional) T48.202 Poisoning by unspecified drugs acting on muscles, intentional self-harm T48.203 Poisoning by unspecified drugs acting on muscles, assault T48.204 Poisoning by unspecified drugs acting on muscles, undetermined T48.205 Adverse effect of unspecified drugs acting on muscles T48.206 Underdosing of unspecified drugs acting on muscles T48.291 Poisoning by other drugs acting on muscles, accidental (unintentional) T48.292 Poisoning by other drugs acting on muscles, intentional self-harm T48.293 Poisoning by other drugs acting on muscles, assault T48.294 Poisoning by other drugs acting on muscles, undetermined T48.295 Adverse effect of other drugs acting on muscles T48.296 Underdosing of other drugs acting on muscles T48.3X1 Poisoning by antitussives, accidental (unintentional) T48.3X2 Poisoning by antitussives, intentional self-harm T48.3X3 Poisoning by antitussives, assault T48.3X4 Poisoning by antitussives, undetermined T48.3X5 Adverse effect of antitussives T48.3X6 Underdosing of antitussives T48.4X1 Poisoning by expectorants, accidental (unintentional) T48.4X2 Poisoning by expectorants, intentional self-harm T48.4X3 Poisoning by expectorants, assault T48.4X4 Poisoning by expectorants, undetermined T48.4X5 Adverse effect of expectorants T48.4X6 Underdosing of expectorants T48.5X1 Poisoning by other anti-common-cold drugs, accidental (unintentional) T48.5X2 Poisoning by other anti-common-cold drugs, intentional self-harm T48.5X3 Poisoning by other anti-common-cold drugs, assault T48.5X4 Poisoning by other anti-common-cold drugs, undetermined T48.5X5 Adverse effect of other anti-common-cold drugs T48.5X6 Underdosing of other anti-common-cold drugs T48.6X1 Poisoning by antiasthmatics, accidental (unintentional) T48.6X2 Poisoning by antiasthmatics, intentional self-harm T48.6X3 Poisoning by antiasthmatics, assault T48.6X4 Poisoning by antiasthmatics, undetermined T48.6X5 Adverse effect of antiasthmatics T48.6X6 Underdosing of antiasthmatics T48.901 Poisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional) T48.902 Poisoning by unspecified agents primarily acting on the respiratory system, intentional self-harm T48.903 Poisoning by unspecified agents primarily acting on the respiratory system, assault T48.904 Poisoning by unspecified agents primarily acting on the respiratory system, undetermined T48.905 Adverse effect of unspecified agents primarily acting on the respiratory system T48.906 Underdosing of unspecified agents primarily acting on the respiratory system T48.991 Poisoning by other agents primarily acting on the respiratory system, accidental (unintentional) T48.992 Poisoning by other agents primarily acting on the respiratory system, intentional self-harm T48.993 Poisoning by other agents primarily acting on the respiratory system, assault T48.994 Poisoning by other agents primarily acting on the respiratory system, undetermined T48.995 Adverse effect of other agents primarily acting on the respiratory system T48.996 Underdosing of other agents primarily acting on the respiratory system
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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