2024 ICD-10-CM Table of Drugs and Chemicals starting with letter R

The 2024 Table of Drugs and Chemicals contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. Use as many codes as necessary to describe all reported drugs, medicinal or chemical substances. Browse Table of Drugs and Chemicals by alphabetical order:

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
self-harm
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
RabiesT50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
Rabies
  »immune globulin (human)
T50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
Rabies
  »vaccine
T50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
RacemoramideT40.2X1T40.2X2T40.2X3T40.2X4  
RacemorphanT40.2X1T40.2X2T40.2X3T40.2X4T40.2X5T40.2X6
RacepinefrinT44.5X1T44.5X2T44.5X3T44.5X4T44.5X5T44.5X6
RacloprideT43.591T43.592T43.593T43.594T43.595T43.596
Radiator alcoholT51.1X1T51.1X2T51.1X3T51.1X4  
Radioactive drug NECT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Radio-opaque (drugs) (materials)T50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
RamifenazoneT39.2X1T39.2X2T39.2X3T39.2X4T39.2X5T39.2X6
RamiprilT46.4X1T46.4X2T46.4X3T46.4X4T46.4X5T46.4X6
RanitidineT47.0X1T47.0X2T47.0X3T47.0X4T47.0X5T47.0X6
RanunculusT62.2X1T62.2X2T62.2X3T62.2X4  
Rat poison NECT60.4X1T60.4X2T60.4X3T60.4X4  
Rattlesnake (venom)T63.011T63.012T63.013T63.014  
RaubasineT46.7X1T46.7X2T46.7X3T46.7X4T46.7X5T46.7X6
RaudixinT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
RautensinT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
RautinaT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
RautotalT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
RauwiloidT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
RauwoldinT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
Rauwolfia (alkaloids)T46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
RazoxaneT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
RealgarT57.0X1T57.0X2T57.0X3T57.0X4  
Red blood cells, packedT45.8X1T45.8X2T45.8X3T45.8X4T45.8X5T45.8X6
Red squill (scilliroside)T60.4X1T60.4X2T60.4X3T60.4X4  
Reducing agent, industrial NECT65.891T65.892T65.893T65.894  
Refrigerant gas (chlorofluoro-carbon)T53.5X1T53.5X2T53.5X3T53.5X4  
Refrigerant gas (chlorofluoro-carbon)
  »not chlorofluoro-carbon
T53.5X1T53.5X2T53.5X3T53.5X4  
RegrotonT50.2X1T50.2X2T50.2X3T50.2X4T50.2X5T50.2X6
Rehydration salts (oral)T50.3X1T50.3X2T50.3X3T50.3X4T50.3X5T50.3X6
RelaT42.8X1T42.8X2T42.8X3T42.8X4T42.8X5T42.8X6
Relaxant, muscleT48.1X1T48.1X2T48.1X3T48.1X4T48.1X5T48.1X6
Relaxant, muscle
  »anesthetic
T48.1X1T48.1X2T48.1X3T48.1X4T48.1X5T48.1X6
Relaxant, muscle
  »central nervous system
T48.1X1T48.1X2T48.1X3T48.1X4T48.1X5T48.1X6
Relaxant, muscle
  »skeletal NEC
T48.1X1T48.1X2T48.1X3T48.1X4T48.1X5T48.1X6
Relaxant, muscle
  »smooth NEC
T48.1X1T48.1X2T48.1X3T48.1X4T48.1X5T48.1X6
RemoxiprideT43.591T43.592T43.593T43.594T43.595T43.596
ReneseT50.2X1T50.2X2T50.2X3T50.2X4T50.2X5T50.2X6
RenografinT50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Replacement solutionT50.3X1T50.3X2T50.3X3T50.3X4T50.3X5T50.3X6
ReproterolT48.6X1T48.6X2T48.6X3T48.6X4T48.6X5T48.6X6
RescinnamineT46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
Reserpin (e)T46.5X1T46.5X2T46.5X3T46.5X4T46.5X5T46.5X6
Resorcin, resorcinol (nonmedicinal)T65.891T65.892T65.893T65.894  
Resorcin, resorcinol (nonmedicinal)
  »medicinal
T65.891T65.892T65.893T65.894  
RespaireT48.4X1T48.4X2T48.4X3T48.4X4T48.4X5T48.4X6
Respiratory drug NECT48.901T48.902T48.903T48.904T48.905T48.906
Respiratory drug NEC
  »antiasthmatic NEC
T48.901T48.902T48.903T48.904T48.905T48.906
Respiratory drug NEC
  »anti-common-cold NEC
T48.901T48.902T48.903T48.904T48.905T48.906
Respiratory drug NEC
  »expectorant NEC
T48.901T48.902T48.903T48.904T48.905T48.906
Respiratory drug NEC
  »stimulant
T48.901T48.902T48.903T48.904T48.905T48.906
Retinoic acidT49.0X1T49.0X2T49.0X3T49.0X4T49.0X5T49.0X6
RetinolT45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
Rh (D) immune globulin (human)T50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
RhodineT39.011T39.012T39.013T39.014T39.015T39.016
RhoGAMT50.Z11T50.Z12T50.Z13T50.Z14T50.Z15T50.Z16
RhubarbT47.2X1T47.2X2T47.2X3T47.2X4T47.2X5T47.2X6
Rhubarb
  »dry extract
T47.2X1T47.2X2T47.2X3T47.2X4T47.2X5T47.2X6
Rhubarb
  »tincture, compound
T47.2X1T47.2X2T47.2X3T47.2X4T47.2X5T47.2X6
RibavirinT37.5X1T37.5X2T37.5X3T37.5X4T37.5X5T37.5X6
RiboflavinT45.2X1T45.2X2T45.2X3T45.2X4T45.2X5T45.2X6
RibostamycinT36.5X1T36.5X2T36.5X3T36.5X4T36.5X5T36.5X6
RicinT62.2X1T62.2X2T62.2X3T62.2X4  
Ricinus communisT62.2X1T62.2X2T62.2X3T62.2X4  
Rickettsial vaccine NECT50.A91T50.A92T50.A93T50.A94T50.A95T50.A96
RifabutinT36.6X1T36.6X2T36.6X3T36.6X4T36.6X5T36.6X6
RifamideT36.6X1T36.6X2T36.6X3T36.6X4T36.6X5T36.6X6
RifampicinT36.6X1T36.6X2T36.6X3T36.6X4T36.6X5T36.6X6
Rifampicin
  »with isoniazid
T36.6X1T36.6X2T36.6X3T36.6X4T36.6X5T36.6X6
RifampinT36.6X1T36.6X2T36.6X3T36.6X4T36.6X5T36.6X6
RifamycinT36.6X1T36.6X2T36.6X3T36.6X4T36.6X5T36.6X6
RifaximinT36.6X1T36.6X2T36.6X3T36.6X4T36.6X5T36.6X6
RimantadineT37.5X1T37.5X2T37.5X3T37.5X4T37.5X5T37.5X6
Rimazolium metilsulfateT39.8X1T39.8X2T39.8X3T39.8X4T39.8X5T39.8X6
RimifonT37.1X1T37.1X2T37.1X3T37.1X4T37.1X5T37.1X6
RimiterolT48.6X1T48.6X2T48.6X3T48.6X4T48.6X5T48.6X6
Ringer (lactate) solutionT50.3X1T50.3X2T50.3X3T50.3X4T50.3X5T50.3X6
RistocetinT36.8X1T36.8X2T36.8X3T36.8X4T36.8X5T36.8X6
RitalinT43.631T43.632T43.633T43.634T43.635T43.636
RitodrineT44.5X1T44.5X2T44.5X3T44.5X4T44.5X5T44.5X6
RociverineT44.3X1T44.3X2T44.3X3T44.3X4T44.3X5T44.3X6
Rocky Mountain spotted fever vaccineT50.A91T50.A92T50.A93T50.A94T50.A95T50.A96
Rodenticide NECT60.4X1T60.4X2T60.4X3T60.4X4  
RohypnolT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
RokitamycinT36.3X1T36.3X2T36.3X3T36.3X4T36.3X5T36.3X6
RolaidsT47.1X1T47.1X2T47.1X3T47.1X4T47.1X5T47.1X6
RolitetracyclineT36.4X1T36.4X2T36.4X3T36.4X4T36.4X5T36.4X6
RomilarT48.3X1T48.3X2T48.3X3T48.3X4T48.3X5T48.3X6
RonifibrateT46.6X1T46.6X2T46.6X3T46.6X4T46.6X5T46.6X6
RosaprostolT47.1X1T47.1X2T47.1X3T47.1X4T47.1X5T47.1X6
Rose bengal sodium (131I)T50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
Rose water ointmentT49.3X1T49.3X2T49.3X3T49.3X4T49.3X5T49.3X6
RosoxacinT37.8X1T37.8X2T37.8X3T37.8X4T37.8X5T37.8X6
RotenoneT60.2X1T60.2X2T60.2X3T60.2X4  
RotoxamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Rough-on-ratsT60.4X1T60.4X2T60.4X3T60.4X4  
RoxatidineT47.0X1T47.0X2T47.0X3T47.0X4T47.0X5T47.0X6
RoxithromycinT36.3X1T36.3X2T36.3X3T36.3X4T36.3X5T36.3X6
Rt-PAT45.611T45.612T45.613T45.614T45.615T45.616
Rubbing alcoholT51.2X1T51.2X2T51.2X3T51.2X4  
RubefacientT49.4X1T49.4X2T49.4X3T49.4X4T49.4X5T49.4X6
Rubella vaccineT50.B91T50.B92T50.B93T50.B94T50.B95T50.B96
Rubeola vaccineT50.B91T50.B92T50.B93T50.B94T50.B95T50.B96
Rubidium chloride Rb82T50.8X1T50.8X2T50.8X3T50.8X4T50.8X5T50.8X6
RubidomycinT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
RueT62.2X1T62.2X2T62.2X3T62.2X4  
RufocromomycinT45.1X1T45.1X2T45.1X3T45.1X4T45.1X5T45.1X6
Russel's viper veninT45.7X1T45.7X2T45.7X3T45.7X4T45.7X5T45.7X6
Ruta (graveolens)T62.2X1T62.2X2T62.2X3T62.2X4  
RutinumT46.991T46.992T46.993T46.994T46.995T46.996
RutosideT46.991T46.992T46.993T46.994T46.995T46.996

Coding Guidelines Table of Drugs and Chemicals

The Codes in categories T36 - T65 are combination codes that include the substance that was taken as well as the intent. No additional external cause code is required for poisonings, toxic effects, adverse effects and underdosing codes.

  • Do not code directly from the Table of Drugs and Chemicals. Always refer back to the Tabular List.
  • Use as many codes as necessary to describe completely all drugs, medicinal or biological substances.
  • If the same code would describe the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, assign the code only once.
  • If two or more drugs, medicinal or biological substances are reported, code each individually unless a combination code is listed in the Table of Drugs and Chemicals.

(a) Adverse Effect

When coding an adverse effect of a drug that has been correctly prescribed and properly administered, assign the appropriate code for the nature of the adverse effect followed by the appropriate code for the adverse effect of the drug (T36-T50). The code for the drug should have a 5th or 6th character "5" (for example T36.0X5-) Examples of the nature of an adverse effect are tachycardia, delirium, gastrointestinal hemorrhaging, vomiting, hypokalemia, hepatitis, renal failure, or respiratory failure.

(b) Poisoning

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.

If there is also a diagnosis of abuse or dependence of the substance, the abuse or dependence is assigned as an additional code.

Examples of poisoning include:

  • (i) Error was made in drug prescription. Errors made in drug prescription or in the administration of the drug by provider, nurse, patient, or other person.
  • (ii) Overdose of a drug intentionally taken. If an overdose of a drug was intentionally taken or administered and resulted in drug toxicity, it would be coded as a poisoning.
  • (iii)Nonprescribed drug taken with correctly prescribed and properly administered drug. If a nonprescribed drug or medicinal agent was taken in combination with a correctly prescribed and properly administered drug, any drug toxicity or other reaction resulting from the interaction of the two drugs would be classified as a poisoning.
  • (iv) Interaction of drug(s) and alcohol. When a reaction results from the interaction of a drug(s) and alcohol, this would be classified as poisoning.

See Section I.C.4. if poisoning is the result of insulin pump malfunctions.

(c) Underdosing

Underdosing refers to taking less of a medication than is prescribed by a provider or a manufacturer's instruction. For underdosing, assign the code from categories T36-T50 (fifth or sixth character "6").

Codes for underdosing should never be assigned as principal or first-listed codes. If a patient has a relapse or exacerbation of the medical condition for which the drug is prescribed because of the reduction in dose, then the medical condition itself should be coded.

Noncompliance (Z91.12-, Z91.13-) or complication of care (Y63.6-Y63.9) codes are to be used with an underdosing code to indicate intent, if known.

(d) Toxic Effects

When a harmful substance is ingested or comes in contact with a person, this is classified as a toxic effect. The toxic effect codes are in categories T51-T65. Toxic effect codes have an associated intent: accidental, intentional self-harm, assault and undetermined.