ICD-10-CM Tabular Index · Chapter 19 · FY 2027 T48
Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system (T48) ICD-10-CM
The T48 code range covers poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system with 259 ICD-10-CM diagnosis codes. 180 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
259
Diagnosis Codes
180
Billable Codes
T48
Code Range
T36–T50
Parent Section
7th Character Note
Certain ICD-10-CM categories have applicable 7th characters. The applicable 7th character is required for all codes within the category, or as the notes in the Tabular List instruct. The 7th character must always be the 7th character in the data field. If a code that requires a 7th character is not 6 characters, a placeholder X must be used to fill in the empty characters.
- The appropriate 7th character is to be added to each code from category T48
7th Character
Indicates that a seventh character is to be assigned to codes in a subcategory.
- A - initial encounter
- D - subsequent encounter
- S - sequela
ICD-10-CM
Codes in the T48 Range 259 codes · 180 billable
259 of 259 shown
- T48 Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory systemNon-billable
- T48.0 Poisoning by, adverse effect of and underdosing of oxytocic drugsNon-billable
- T48.0X Poisoning by, adverse effect of and underdosing of oxytocic drugsNon-billable
- T48.0X1 Poisoning by oxytocic drugs, accidental (unintentional)Non-billable
- T48.0X1A Poisoning by oxytocic drugs, accidental (unintentional), initial encounter
- T48.0X1D Poisoning by oxytocic drugs, accidental (unintentional), subsequent encounter
- T48.0X1S Poisoning by oxytocic drugs, accidental (unintentional), sequela
- T48.0X2 Poisoning by oxytocic drugs, intentional self-harmNon-billable
- T48.0X2A Poisoning by oxytocic drugs, intentional self-harm, initial encounter
- T48.0X2D Poisoning by oxytocic drugs, intentional self-harm, subsequent encounter
- T48.0X2S Poisoning by oxytocic drugs, intentional self-harm, sequela
- T48.0X3 Poisoning by oxytocic drugs, assaultNon-billable
- T48.0X3A Poisoning by oxytocic drugs, assault, initial encounter
- T48.0X3D Poisoning by oxytocic drugs, assault, subsequent encounter
- T48.0X3S Poisoning by oxytocic drugs, assault, sequela
- T48.0X4 Poisoning by oxytocic drugs, undeterminedNon-billable
- T48.0X4A Poisoning by oxytocic drugs, undetermined, initial encounter
- T48.0X4D Poisoning by oxytocic drugs, undetermined, subsequent encounter
- T48.0X4S Poisoning by oxytocic drugs, undetermined, sequela
- T48.0X5 Adverse effect of oxytocic drugsNon-billable
- T48.0X5A Adverse effect of oxytocic drugs, initial encounter
- T48.0X5D Adverse effect of oxytocic drugs, subsequent encounter
- T48.0X5S Adverse effect of oxytocic drugs, sequela
- T48.0X6 Underdosing of oxytocic drugsNon-billable
- T48.0X6A Underdosing of oxytocic drugs, initial encounter
- T48.0X6D Underdosing of oxytocic drugs, subsequent encounter
- T48.0X6S Underdosing of oxytocic drugs, sequela
- T48.1 Poisoning by, adverse effect of and underdosing of skeletal muscle relaxants [neuromuscular blocking agents]Non-billable
- T48.1X Poisoning by, adverse effect of and underdosing of skeletal muscle relaxants [neuromuscular blocking agents]Non-billable
- T48.1X1 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional)Non-billable
- T48.1X1A Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional), initial encounter
- T48.1X1D Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional), subsequent encounter
- T48.1X1S Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], accidental (unintentional), sequela
- T48.1X2 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harmNon-billable
- T48.1X2A Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harm, initial encounter
- T48.1X2D Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harm, subsequent encounter
- T48.1X2S Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], intentional self-harm, sequela
- T48.1X3 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], assaultNon-billable
- T48.1X3A Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], assault, initial encounter
- T48.1X3D Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], assault, subsequent encounter
- T48.1X3S Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], assault, sequela
- T48.1X4 Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], undeterminedNon-billable
- T48.1X4A Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], undetermined, initial encounter
- T48.1X4D Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], undetermined, subsequent encounter
- T48.1X4S Poisoning by skeletal muscle relaxants [neuromuscular blocking agents], undetermined, sequela
- T48.1X5 Adverse effect of skeletal muscle relaxants [neuromuscular blocking agents]Non-billable
- T48.1X5A Adverse effect of skeletal muscle relaxants [neuromuscular blocking agents], initial encounter
- T48.1X5D Adverse effect of skeletal muscle relaxants [neuromuscular blocking agents], subsequent encounter
- T48.1X5S Adverse effect of skeletal muscle relaxants [neuromuscular blocking agents], sequela
- T48.1X6 Underdosing of skeletal muscle relaxants [neuromuscular blocking agents]Non-billable
- T48.1X6A Underdosing of skeletal muscle relaxants [neuromuscular blocking agents], initial encounter
- T48.1X6D Underdosing of skeletal muscle relaxants [neuromuscular blocking agents], subsequent encounter
- T48.1X6S Underdosing of skeletal muscle relaxants [neuromuscular blocking agents], sequela
- T48.2 Poisoning by, adverse effect of and underdosing of other and unspecified drugs acting on musclesNon-billable
- T48.20 Poisoning by, adverse effect of and underdosing of unspecified drugs acting on musclesNon-billable
- T48.201 Poisoning by unspecified drugs acting on muscles, accidental (unintentional)Non-billable
- T48.201A Poisoning by unspecified drugs acting on muscles, accidental (unintentional), initial encounter
- T48.201D Poisoning by unspecified drugs acting on muscles, accidental (unintentional), subsequent encounter
- T48.201S Poisoning by unspecified drugs acting on muscles, accidental (unintentional), sequela
- T48.202 Poisoning by unspecified drugs acting on muscles, intentional self-harmNon-billable
- T48.202A Poisoning by unspecified drugs acting on muscles, intentional self-harm, initial encounter
- T48.202D Poisoning by unspecified drugs acting on muscles, intentional self-harm, subsequent encounter
- T48.202S Poisoning by unspecified drugs acting on muscles, intentional self-harm, sequela
- T48.203 Poisoning by unspecified drugs acting on muscles, assaultNon-billable
- T48.203A Poisoning by unspecified drugs acting on muscles, assault, initial encounter
- T48.203D Poisoning by unspecified drugs acting on muscles, assault, subsequent encounter
- T48.203S Poisoning by unspecified drugs acting on muscles, assault, sequela
- T48.204 Poisoning by unspecified drugs acting on muscles, undeterminedNon-billable
- T48.204A Poisoning by unspecified drugs acting on muscles, undetermined, initial encounter
- T48.204D Poisoning by unspecified drugs acting on muscles, undetermined, subsequent encounter
- T48.204S Poisoning by unspecified drugs acting on muscles, undetermined, sequela
- T48.205 Adverse effect of unspecified drugs acting on musclesNon-billable
- T48.205A Adverse effect of unspecified drugs acting on muscles, initial encounter
- T48.205D Adverse effect of unspecified drugs acting on muscles, subsequent encounter
- T48.205S Adverse effect of unspecified drugs acting on muscles, sequela
- T48.206 Underdosing of unspecified drugs acting on musclesNon-billable
- T48.206A Underdosing of unspecified drugs acting on muscles, initial encounter
- T48.206D Underdosing of unspecified drugs acting on muscles, subsequent encounter
- T48.206S Underdosing of unspecified drugs acting on muscles, sequela
- T48.29 Poisoning by, adverse effect of and underdosing of other drugs acting on musclesNon-billable
- T48.291 Poisoning by other drugs acting on muscles, accidental (unintentional)Non-billable
- T48.291A Poisoning by other drugs acting on muscles, accidental (unintentional), initial encounter
- T48.291D Poisoning by other drugs acting on muscles, accidental (unintentional), subsequent encounter
- T48.291S Poisoning by other drugs acting on muscles, accidental (unintentional), sequela
- T48.292 Poisoning by other drugs acting on muscles, intentional self-harmNon-billable
- T48.292A Poisoning by other drugs acting on muscles, intentional self-harm, initial encounter
- T48.292D Poisoning by other drugs acting on muscles, intentional self-harm, subsequent encounter
- T48.292S Poisoning by other drugs acting on muscles, intentional self-harm, sequela
- T48.293 Poisoning by other drugs acting on muscles, assaultNon-billable
- T48.293A Poisoning by other drugs acting on muscles, assault, initial encounter
- T48.293D Poisoning by other drugs acting on muscles, assault, subsequent encounter
- T48.293S Poisoning by other drugs acting on muscles, assault, sequela
- T48.294 Poisoning by other drugs acting on muscles, undeterminedNon-billable
- T48.294A Poisoning by other drugs acting on muscles, undetermined, initial encounter
- T48.294D Poisoning by other drugs acting on muscles, undetermined, subsequent encounter
- T48.294S Poisoning by other drugs acting on muscles, undetermined, sequela
- T48.295 Adverse effect of other drugs acting on musclesNon-billable
- T48.295A Adverse effect of other drugs acting on muscles, initial encounter
- T48.295D Adverse effect of other drugs acting on muscles, subsequent encounter
- T48.295S Adverse effect of other drugs acting on muscles, sequela
- T48.296 Underdosing of other drugs acting on musclesNon-billable
- T48.296A Underdosing of other drugs acting on muscles, initial encounter
- T48.296D Underdosing of other drugs acting on muscles, subsequent encounter
- T48.296S Underdosing of other drugs acting on muscles, sequela
- T48.3 Poisoning by, adverse effect of and underdosing of antitussivesNon-billable
- T48.3X Poisoning by, adverse effect of and underdosing of antitussivesNon-billable
- T48.3X1 Poisoning by antitussives, accidental (unintentional)Non-billable
- T48.3X1A Poisoning by antitussives, accidental (unintentional), initial encounter
- T48.3X1D Poisoning by antitussives, accidental (unintentional), subsequent encounter
- T48.3X1S Poisoning by antitussives, accidental (unintentional), sequela
- T48.3X2 Poisoning by antitussives, intentional self-harmNon-billable
- T48.3X2A Poisoning by antitussives, intentional self-harm, initial encounter
- T48.3X2D Poisoning by antitussives, intentional self-harm, subsequent encounter
- T48.3X2S Poisoning by antitussives, intentional self-harm, sequela
- T48.3X3 Poisoning by antitussives, assaultNon-billable
- T48.3X3A Poisoning by antitussives, assault, initial encounter
- T48.3X3D Poisoning by antitussives, assault, subsequent encounter
- T48.3X3S Poisoning by antitussives, assault, sequela
- T48.3X4 Poisoning by antitussives, undeterminedNon-billable
- T48.3X4A Poisoning by antitussives, undetermined, initial encounter
- T48.3X4D Poisoning by antitussives, undetermined, subsequent encounter
- T48.3X4S Poisoning by antitussives, undetermined, sequela
- T48.3X5 Adverse effect of antitussivesNon-billable
- T48.3X5A Adverse effect of antitussives, initial encounter
- T48.3X5D Adverse effect of antitussives, subsequent encounter
- T48.3X5S Adverse effect of antitussives, sequela
- T48.3X6 Underdosing of antitussivesNon-billable
- T48.3X6A Underdosing of antitussives, initial encounter
- T48.3X6D Underdosing of antitussives, subsequent encounter
- T48.3X6S Underdosing of antitussives, sequela
- T48.4 Poisoning by, adverse effect of and underdosing of expectorantsNon-billable
- T48.4X Poisoning by, adverse effect of and underdosing of expectorantsNon-billable
- T48.4X1 Poisoning by expectorants, accidental (unintentional)Non-billable
- T48.4X1A Poisoning by expectorants, accidental (unintentional), initial encounter
- T48.4X1D Poisoning by expectorants, accidental (unintentional), subsequent encounter
- T48.4X1S Poisoning by expectorants, accidental (unintentional), sequela
- T48.4X2 Poisoning by expectorants, intentional self-harmNon-billable
- T48.4X2A Poisoning by expectorants, intentional self-harm, initial encounter
- T48.4X2D Poisoning by expectorants, intentional self-harm, subsequent encounter
- T48.4X2S Poisoning by expectorants, intentional self-harm, sequela
- T48.4X3 Poisoning by expectorants, assaultNon-billable
- T48.4X3A Poisoning by expectorants, assault, initial encounter
- T48.4X3D Poisoning by expectorants, assault, subsequent encounter
- T48.4X3S Poisoning by expectorants, assault, sequela
- T48.4X4 Poisoning by expectorants, undeterminedNon-billable
- T48.4X4A Poisoning by expectorants, undetermined, initial encounter
- T48.4X4D Poisoning by expectorants, undetermined, subsequent encounter
- T48.4X4S Poisoning by expectorants, undetermined, sequela
- T48.4X5 Adverse effect of expectorantsNon-billable
- T48.4X5A Adverse effect of expectorants, initial encounter
- T48.4X5D Adverse effect of expectorants, subsequent encounter
- T48.4X5S Adverse effect of expectorants, sequela
- T48.4X6 Underdosing of expectorantsNon-billable
- T48.4X6A Underdosing of expectorants, initial encounter
- T48.4X6D Underdosing of expectorants, subsequent encounter
- T48.4X6S Underdosing of expectorants, sequela
- T48.5 Poisoning by, adverse effect of and underdosing of other anti-common-cold drugsNon-billable
- T48.5X Poisoning by, adverse effect of and underdosing of other anti-common-cold drugsNon-billable
- T48.5X1 Poisoning by other anti-common-cold drugs, accidental (unintentional)Non-billable
- T48.5X1A Poisoning by other anti-common-cold drugs, accidental (unintentional), initial encounter
- T48.5X1D Poisoning by other anti-common-cold drugs, accidental (unintentional), subsequent encounter
- T48.5X1S Poisoning by other anti-common-cold drugs, accidental (unintentional), sequela
- T48.5X2 Poisoning by other anti-common-cold drugs, intentional self-harmNon-billable
- T48.5X2A Poisoning by other anti-common-cold drugs, intentional self-harm, initial encounter
- T48.5X2D Poisoning by other anti-common-cold drugs, intentional self-harm, subsequent encounter
- T48.5X2S Poisoning by other anti-common-cold drugs, intentional self-harm, sequela
- T48.5X3 Poisoning by other anti-common-cold drugs, assaultNon-billable
- T48.5X3A Poisoning by other anti-common-cold drugs, assault, initial encounter
- T48.5X3D Poisoning by other anti-common-cold drugs, assault, subsequent encounter
- T48.5X3S Poisoning by other anti-common-cold drugs, assault, sequela
- T48.5X4 Poisoning by other anti-common-cold drugs, undeterminedNon-billable
- T48.5X4A Poisoning by other anti-common-cold drugs, undetermined, initial encounter
- T48.5X4D Poisoning by other anti-common-cold drugs, undetermined, subsequent encounter
- T48.5X4S Poisoning by other anti-common-cold drugs, undetermined, sequela
- T48.5X5 Adverse effect of other anti-common-cold drugsNon-billable
- T48.5X5A Adverse effect of other anti-common-cold drugs, initial encounter
- T48.5X5D Adverse effect of other anti-common-cold drugs, subsequent encounter
- T48.5X5S Adverse effect of other anti-common-cold drugs, sequela
- T48.5X6 Underdosing of other anti-common-cold drugsNon-billable
- T48.5X6A Underdosing of other anti-common-cold drugs, initial encounter
- T48.5X6D Underdosing of other anti-common-cold drugs, subsequent encounter
- T48.5X6S Underdosing of other anti-common-cold drugs, sequela
- T48.6 Poisoning by, adverse effect of and underdosing of antiasthmatics, not elsewhere classifiedNon-billable
- T48.6X Poisoning by, adverse effect of and underdosing of antiasthmaticsNon-billable
- T48.6X1 Poisoning by antiasthmatics, accidental (unintentional)Non-billable
- T48.6X1A Poisoning by antiasthmatics, accidental (unintentional), initial encounter
- T48.6X1D Poisoning by antiasthmatics, accidental (unintentional), subsequent encounter
- T48.6X1S Poisoning by antiasthmatics, accidental (unintentional), sequela
- T48.6X2 Poisoning by antiasthmatics, intentional self-harmNon-billable
- T48.6X2A Poisoning by antiasthmatics, intentional self-harm, initial encounter
- T48.6X2D Poisoning by antiasthmatics, intentional self-harm, subsequent encounter
- T48.6X2S Poisoning by antiasthmatics, intentional self-harm, sequela
- T48.6X3 Poisoning by antiasthmatics, assaultNon-billable
- T48.6X3A Poisoning by antiasthmatics, assault, initial encounter
- T48.6X3D Poisoning by antiasthmatics, assault, subsequent encounter
- T48.6X3S Poisoning by antiasthmatics, assault, sequela
- T48.6X4 Poisoning by antiasthmatics, undeterminedNon-billable
- T48.6X4A Poisoning by antiasthmatics, undetermined, initial encounter
- T48.6X4D Poisoning by antiasthmatics, undetermined, subsequent encounter
- T48.6X4S Poisoning by antiasthmatics, undetermined, sequela
- T48.6X5 Adverse effect of antiasthmaticsNon-billable
- T48.6X5A Adverse effect of antiasthmatics, initial encounter
- T48.6X5D Adverse effect of antiasthmatics, subsequent encounter
- T48.6X5S Adverse effect of antiasthmatics, sequela
- T48.6X6 Underdosing of antiasthmaticsNon-billable
- T48.6X6A Underdosing of antiasthmatics, initial encounter
- T48.6X6D Underdosing of antiasthmatics, subsequent encounter
- T48.6X6S Underdosing of antiasthmatics, sequela
- T48.9 Poisoning by, adverse effect of and underdosing of other and unspecified agents primarily acting on the respiratory systemNon-billable
- T48.90 Poisoning by, adverse effect of and underdosing of unspecified agents primarily acting on the respiratory systemNon-billable
- T48.901 Poisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional)Non-billable
- T48.901A Poisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional), initial encounter
- T48.901D Poisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional), subsequent encounter
- T48.901S Poisoning by unspecified agents primarily acting on the respiratory system, accidental (unintentional), sequela
- T48.902 Poisoning by unspecified agents primarily acting on the respiratory system, intentional self-harmNon-billable
- T48.902A Poisoning by unspecified agents primarily acting on the respiratory system, intentional self-harm, initial encounter
- T48.902D Poisoning by unspecified agents primarily acting on the respiratory system, intentional self-harm, subsequent encounter
- T48.902S Poisoning by unspecified agents primarily acting on the respiratory system, intentional self-harm, sequela
- T48.903 Poisoning by unspecified agents primarily acting on the respiratory system, assaultNon-billable
- T48.903A Poisoning by unspecified agents primarily acting on the respiratory system, assault, initial encounter
- T48.903D Poisoning by unspecified agents primarily acting on the respiratory system, assault, subsequent encounter
- T48.903S Poisoning by unspecified agents primarily acting on the respiratory system, assault, sequela
- T48.904 Poisoning by unspecified agents primarily acting on the respiratory system, undeterminedNon-billable
- T48.904A Poisoning by unspecified agents primarily acting on the respiratory system, undetermined, initial encounter
- T48.904D Poisoning by unspecified agents primarily acting on the respiratory system, undetermined, subsequent encounter
- T48.904S Poisoning by unspecified agents primarily acting on the respiratory system, undetermined, sequela
- T48.905 Adverse effect of unspecified agents primarily acting on the respiratory systemNon-billable
- T48.905A Adverse effect of unspecified agents primarily acting on the respiratory system, initial encounter
- T48.905D Adverse effect of unspecified agents primarily acting on the respiratory system, subsequent encounter
- T48.905S Adverse effect of unspecified agents primarily acting on the respiratory system, sequela
- T48.906 Underdosing of unspecified agents primarily acting on the respiratory systemNon-billable
- T48.906A Underdosing of unspecified agents primarily acting on the respiratory system, initial encounter
- T48.906D Underdosing of unspecified agents primarily acting on the respiratory system, subsequent encounter
- T48.906S Underdosing of unspecified agents primarily acting on the respiratory system, sequela
- T48.99 Poisoning by, adverse effect of and underdosing of other agents primarily acting on the respiratory systemNon-billable
- T48.991 Poisoning by other agents primarily acting on the respiratory system, accidental (unintentional)Non-billable
- T48.991A Poisoning by other agents primarily acting on the respiratory system, accidental (unintentional), initial encounter
- T48.991D Poisoning by other agents primarily acting on the respiratory system, accidental (unintentional), subsequent encounter
- T48.991S Poisoning by other agents primarily acting on the respiratory system, accidental (unintentional), sequela
- T48.992 Poisoning by other agents primarily acting on the respiratory system, intentional self-harmNon-billable
- T48.992A Poisoning by other agents primarily acting on the respiratory system, intentional self-harm, initial encounter
- T48.992D Poisoning by other agents primarily acting on the respiratory system, intentional self-harm, subsequent encounter
- T48.992S Poisoning by other agents primarily acting on the respiratory system, intentional self-harm, sequela
- T48.993 Poisoning by other agents primarily acting on the respiratory system, assaultNon-billable
- T48.993A Poisoning by other agents primarily acting on the respiratory system, assault, initial encounter
- T48.993D Poisoning by other agents primarily acting on the respiratory system, assault, subsequent encounter
- T48.993S Poisoning by other agents primarily acting on the respiratory system, assault, sequela
- T48.994 Poisoning by other agents primarily acting on the respiratory system, undeterminedNon-billable
- T48.994A Poisoning by other agents primarily acting on the respiratory system, undetermined, initial encounter
- T48.994D Poisoning by other agents primarily acting on the respiratory system, undetermined, subsequent encounter
- T48.994S Poisoning by other agents primarily acting on the respiratory system, undetermined, sequela
- T48.995 Adverse effect of other agents primarily acting on the respiratory systemNon-billable
- T48.995A Adverse effect of other agents primarily acting on the respiratory system, initial encounter
- T48.995D Adverse effect of other agents primarily acting on the respiratory system, subsequent encounter
- T48.995S Adverse effect of other agents primarily acting on the respiratory system, sequela
- T48.996 Underdosing of other agents primarily acting on the respiratory systemNon-billable
- T48.996A Underdosing of other agents primarily acting on the respiratory system, initial encounter
- T48.996D Underdosing of other agents primarily acting on the respiratory system, subsequent encounter
- T48.996S Underdosing of other agents primarily acting on the respiratory system, sequela
About the T48 Code Range
Poisoning, adverse effects, and underdosing in this category involve drugs that act mainly on muscles or the respiratory system.
The subdivisions separate oxytocic drugs, skeletal muscle relaxants, other muscle-acting drugs, cough suppressants, expectorants, other cold drugs, and asthma drugs. Within muscle-acting drugs, T48.20 identifies an unspecified drug, while T48.29 identifies another drug. Respiratory agents have the same other-versus-unspecified distinction under T48.9.
The seventh character identifies an initial encounter (A), a subsequent encounter (D), or a later effect, called a sequela (S).
Questions About This Page
How many billable codes are in the T48 range?
Of the 259 codes in this range, 180 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the T48 range classify?
The range classifies poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
All ICD-10-CM ChaptersAll of Chapter 19ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
