Block in Chapter 19
T36–T50
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances
Code first
If the underlying condition listed here is present and known, sequence it first.
Use additional code
Add the listed code as a secondary code, if known.
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Also from chapter/block level (1 note)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes1
Not coded here. The listed conditions generally should not be reported together.
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- toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
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Also from chapter/block level (2 notes)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
- birth trauma (P10-P15)
- obstetric trauma (O70-O71)
Includes
Further defines or gives examples of the content of the category.
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- 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
Notes
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- 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.
Also from chapter/block level (2 notes)
Inherited from Chapter 19 Injury, poisoning and certain other consequences of external causes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Categories in this block 15
- 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