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.

Use Additional 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-)

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)

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.-)
  • drug reaction and poisoning affecting newborn (P00-P96)
  • pathological drug intoxication (inebriation) (F10-F19)
  1. T36 Poisoning by, adverse effect of and underdosing of systemic antibiotics

    Excludes1

    • antineoplastic antibiotics (T45.1-)
    • locally applied antibiotic NEC (T49.0)
    • topically used antibiotic for ear, nose and throat (T49.6)
    • topically used antibiotic for eye (T49.5)

    The appropriate 7th character is to be added to each code from category T36

    • A - initial encounter
    • D - subsequent encounter
    • S - sequela
    1. T36.0 Poisoning by, adverse effect of and underdosing of penicillins

      1. T36.0X Poisoning by, adverse effect of and underdosing of penicillins

        • T36.0X1 Poisoning by penicillins, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by penicillins NOS
        • T36.0X2 Poisoning by penicillins, intentional self-harm
        • T36.0X3 Poisoning by penicillins, assault
        • T36.0X4 Poisoning by penicillins, undetermined
        • T36.0X5 Adverse effect of penicillins
        • T36.0X6 Underdosing of penicillins
    2. T36.1 Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibiotics

      1. T36.1X Poisoning by, adverse effect of and underdosing of cephalosporins and other beta-lactam antibiotics

        • T36.1X1 Poisoning by cephalosporins and other beta-lactam antibiotics, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by cephalosporins and other beta-lactam antibiotics NOS
        • T36.1X2 Poisoning by cephalosporins and other beta-lactam antibiotics, intentional self-harm
        • T36.1X3 Poisoning by cephalosporins and other beta-lactam antibiotics, assault
        • T36.1X4 Poisoning by cephalosporins and other beta-lactam antibiotics, undetermined
        • T36.1X5 Adverse effect of cephalosporins and other beta-lactam antibiotics
        • T36.1X6 Underdosing of cephalosporins and other beta-lactam antibiotics
    3. T36.2 Poisoning by, adverse effect of and underdosing of chloramphenicol group

      1. T36.2X Poisoning by, adverse effect of and underdosing of chloramphenicol group

        • T36.2X1 Poisoning by chloramphenicol group, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by chloramphenicol group NOS
        • T36.2X2 Poisoning by chloramphenicol group, intentional self-harm
        • T36.2X3 Poisoning by chloramphenicol group, assault
        • T36.2X4 Poisoning by chloramphenicol group, undetermined
        • T36.2X5 Adverse effect of chloramphenicol group
        • T36.2X6 Underdosing of chloramphenicol group
    4. T36.3 Poisoning by, adverse effect of and underdosing of macrolides

      1. T36.3X Poisoning by, adverse effect of and underdosing of macrolides

        • T36.3X1 Poisoning by macrolides, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by macrolides NOS
        • T36.3X2 Poisoning by macrolides, intentional self-harm
        • T36.3X3 Poisoning by macrolides, assault
        • T36.3X4 Poisoning by macrolides, undetermined
        • T36.3X5 Adverse effect of macrolides
        • T36.3X6 Underdosing of macrolides
    5. T36.4 Poisoning by, adverse effect of and underdosing of tetracyclines

      1. T36.4X Poisoning by, adverse effect of and underdosing of tetracyclines

        • T36.4X1 Poisoning by tetracyclines, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by tetracyclines NOS
        • T36.4X2 Poisoning by tetracyclines, intentional self-harm
        • T36.4X3 Poisoning by tetracyclines, assault
        • T36.4X4 Poisoning by tetracyclines, undetermined
        • T36.4X5 Adverse effect of tetracyclines
        • T36.4X6 Underdosing of tetracyclines
    6. T36.5 Poisoning by, adverse effect of and underdosing of aminoglycosides

      Inclusion term(s):

      • Poisoning by, adverse effect of and underdosing of streptomycin
      1. T36.5X Poisoning by, adverse effect of and underdosing of aminoglycosides

        • T36.5X1 Poisoning by aminoglycosides, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by aminoglycosides NOS
        • T36.5X2 Poisoning by aminoglycosides, intentional self-harm
        • T36.5X3 Poisoning by aminoglycosides, assault
        • T36.5X4 Poisoning by aminoglycosides, undetermined
        • T36.5X5 Adverse effect of aminoglycosides
        • T36.5X6 Underdosing of aminoglycosides
    7. T36.6 Poisoning by, adverse effect of and underdosing of rifampicins

      1. T36.6X Poisoning by, adverse effect of and underdosing of rifampicins

        • T36.6X1 Poisoning by rifampicins, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by rifampicins NOS
        • T36.6X2 Poisoning by rifampicins, intentional self-harm
        • T36.6X3 Poisoning by rifampicins, assault
        • T36.6X4 Poisoning by rifampicins, undetermined
        • T36.6X5 Adverse effect of rifampicins
        • T36.6X6 Underdosing of rifampicins
    8. T36.7 Poisoning by, adverse effect of and underdosing of antifungal antibiotics, systemically used

      1. T36.7X Poisoning by, adverse effect of and underdosing of antifungal antibiotics, systemically used

        • T36.7X1 Poisoning by antifungal antibiotics, systemically used, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by antifungal antibiotics, systemically used NOS
        • T36.7X2 Poisoning by antifungal antibiotics, systemically used, intentional self-harm
        • T36.7X3 Poisoning by antifungal antibiotics, systemically used, assault
        • T36.7X4 Poisoning by antifungal antibiotics, systemically used, undetermined
        • T36.7X5 Adverse effect of antifungal antibiotics, systemically used
        • T36.7X6 Underdosing of antifungal antibiotics, systemically used
    9. T36.8 Poisoning by, adverse effect of and underdosing of other systemic antibiotics

      1. T36.8X Poisoning by, adverse effect of and underdosing of other systemic antibiotics

        • T36.8X1 Poisoning by other systemic antibiotics, accidental (unintentional)

          Inclusion term(s):

          • Poisoning by other systemic antibiotics NOS
        • T36.8X2 Poisoning by other systemic antibiotics, intentional self-harm
        • T36.8X3 Poisoning by other systemic antibiotics, assault
        • T36.8X4 Poisoning by other systemic antibiotics, undetermined
        • T36.8X5 Adverse effect of other systemic antibiotics
        • T36.8X6 Underdosing of other systemic antibiotics
    10. T36.9 Poisoning by, adverse effect of and underdosing of unspecified systemic antibiotic

      1. T36.91 Poisoning by unspecified systemic antibiotic, accidental (unintentional)

        Inclusion term(s):

        • Poisoning by systemic antibiotic NOS
      2. T36.92 Poisoning by unspecified systemic antibiotic, intentional self-harm

      3. T36.93 Poisoning by unspecified systemic antibiotic, assault

      4. T36.94 Poisoning by unspecified systemic antibiotic, undetermined

      5. T36.95 Adverse effect of unspecified systemic antibiotic

      6. T36.96 Underdosing of unspecified systemic antibiotic

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.