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ICD-10-CM 2027 · T36-T50

Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances

Part of chapter 19, injury, poisoning and certain other consequences of external causes.

About T36-T50

Block T36-T50 contains 15 categories and 3,186 billable codes for FY2027. No codes here changed in the FY2027 update. None of its codes are CCs or MCCs.

T36Poisoning by, adverse effect of and underdosing of systemic antibiotics

T37Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics

T38Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified

T39Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumatics

T40Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]

T41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gases

T42Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs

T43Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified

T44Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system

T45Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified

T46Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system

T47Poisoning by, adverse effect of and underdosing of agents primarily affecting the gastrointestinal system

T48Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory system

T49Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs

T50Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances

Block notes

Note
  • The drug giving rise to the adverse effect should be identified by use of codes from categories T36-T50 with fifth or sixth character 5.
Includes
  • adverse effect of correct substance properly administered
  • poisoning by overdose of substance
  • poisoning by wrong substance given or taken in error
  • underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
Excludes1
  • toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes2
  • abuse and dependence of psychoactive substances (F10-F19)
  • abuse of non-dependence-producing substances (F55.-)
  • immunodeficiency due to drugs (D84.821)
  • drug reaction and poisoning affecting newborn (P00-P96)
  • pathological drug intoxication (inebriation) (F10-F19)
Code first
  • , for adverse effects, the nature of the adverse effect, such as:
  • adverse effect NOS (T88.7)
  • aspirin gastritis (K29.-)
  • blood disorders (D56-D76)
  • contact dermatitis (L23-L25)
  • dermatitis due to substances taken internally (L27.-)
  • nephropathy (N14.0-N14.2)
Use additional code
  • code(s) to specify:
  • manifestations of poisoning
  • underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
  • underdosing of medication regimen (Z91.12-, Z91.13-)