ICD-10-CM Codes
S00-T88 Injury, poisoning and certain other consequences of external causes
T36-T50 Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances

Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances T50- >

Codes

T50 Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances
- T50.0 Poisoning by, adverse effect of and underdosing of mineralocorticoids and their antagonists
  - T50.0X Poisoning by, adverse effect of and underdosing of mineralocorticoids and their antagonists
    - T50.0X1 Poisoning by mineralocorticoids and their antagonists, accidental (unintentional)
      - T50.0X1A …… initial encounter
      - T50.0X1D …… subsequent encounter
      - T50.0X1S …… sequela
    - T50.0X2 Poisoning by mineralocorticoids and their antagonists, intentional self-harm
      - T50.0X2A …… initial encounter
      - T50.0X2D …… subsequent encounter
      - T50.0X2S …… sequela
    - T50.0X3 Poisoning by mineralocorticoids and their antagonists, assault
      - T50.0X3A …… initial encounter
      - T50.0X3D …… subsequent encounter
      - T50.0X3S …… sequela
    - T50.0X4 Poisoning by mineralocorticoids and their antagonists, undetermined
      - T50.0X4A …… initial encounter
      - T50.0X4D …… subsequent encounter
      - T50.0X4S …… sequela
    - T50.0X5 Adverse effect of mineralocorticoids and their antagonists
      - T50.0X5A …… initial encounter
      - T50.0X5D …… subsequent encounter
      - T50.0X5S …… sequela
    - T50.0X6 Underdosing of mineralocorticoids and their antagonists
      - T50.0X6A …… initial encounter
      - T50.0X6D …… subsequent encounter
      - T50.0X6S …… sequela
- T50.1 Poisoning by, adverse effect of and underdosing of loop [high-ceiling] diuretics
  - T50.1X Poisoning by, adverse effect of and underdosing of loop [high-ceiling] diuretics
    - T50.1X1 Poisoning by loop [high-ceiling] diuretics, accidental (unintentional)
      - T50.1X1A …… initial encounter
      - T50.1X1D …… subsequent encounter
      - T50.1X1S …… sequela
    - T50.1X2 Poisoning by loop [high-ceiling] diuretics, intentional self-harm
      - T50.1X2A …… initial encounter
      - T50.1X2D …… subsequent encounter
      - T50.1X2S …… sequela
    - T50.1X3 Poisoning by loop [high-ceiling] diuretics, assault
      - T50.1X3A …… initial encounter
      - T50.1X3D …… subsequent encounter
      - T50.1X3S …… sequela
    - T50.1X4 Poisoning by loop [high-ceiling] diuretics, undetermined
      - T50.1X4A …… initial encounter
      - T50.1X4D …… subsequent encounter
      - T50.1X4S …… sequela
    - T50.1X5 Adverse effect of loop [high-ceiling] diuretics
      - T50.1X5A …… initial encounter
      - T50.1X5D …… subsequent encounter
      - T50.1X5S …… sequela
    - T50.1X6 Underdosing of loop [high-ceiling] diuretics
      - T50.1X6A …… initial encounter
      - T50.1X6D …… subsequent encounter
      - T50.1X6S …… sequela
- T50.2 Poisoning by, adverse effect of and underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics
  - T50.2X Poisoning by, adverse effect of and underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics
    - T50.2X1 Poisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, accidental (unintentional)
      - T50.2X1A …… initial encounter
      - T50.2X1D …… subsequent encounter
      - T50.2X1S …… sequela
    - T50.2X2 Poisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, intentional self-harm
      - T50.2X2A …… initial encounter
      - T50.2X2D …… subsequent encounter
      - T50.2X2S …… sequela
    - T50.2X3 Poisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, assault
      - T50.2X3A …… initial encounter
      - T50.2X3D …… subsequent encounter
      - T50.2X3S …… sequela
    - T50.2X4 Poisoning by carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, undetermined
      - T50.2X4A …… initial encounter
      - T50.2X4D …… subsequent encounter
      - T50.2X4S …… sequela
    - T50.2X5 Adverse effect of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics
      - T50.2X5A …… initial encounter
      - T50.2X5D …… subsequent encounter
      - T50.2X5S …… sequela
    - T50.2X6 Underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics
      - T50.2X6A …… initial encounter
      - T50.2X6D …… subsequent encounter
      - T50.2X6S …… sequela
- T50.3 Poisoning by, adverse effect of and underdosing of electrolytic, caloric and water-balance agents
  - T50.3X Poisoning by, adverse effect of and underdosing of electrolytic, caloric and water-balance agents
    - T50.3X1 Poisoning by electrolytic, caloric and water-balance agents, accidental (unintentional)
      - T50.3X1A …… initial encounter
      - T50.3X1D …… subsequent encounter
      - T50.3X1S …… sequela
    - T50.3X2 Poisoning by electrolytic, caloric and water-balance agents, intentional self-harm
      - T50.3X2A …… initial encounter
      - T50.3X2D …… subsequent encounter
      - T50.3X2S …… sequela
    - T50.3X3 Poisoning by electrolytic, caloric and water-balance agents, assault
      - T50.3X3A …… initial encounter
      - T50.3X3D …… subsequent encounter
      - T50.3X3S …… sequela
    - T50.3X4 Poisoning by electrolytic, caloric and water-balance agents, undetermined
      - T50.3X4A …… initial encounter
      - T50.3X4D …… subsequent encounter
      - T50.3X4S …… sequela
    - T50.3X5 Adverse effect of electrolytic, caloric and water-balance agents
      - T50.3X5A …… initial encounter
      - T50.3X5D …… subsequent encounter
      - T50.3X5S …… sequela
    - T50.3X6 Underdosing of electrolytic, caloric and water-balance agents
      - T50.3X6A …… initial encounter
      - T50.3X6D …… subsequent encounter
      - T50.3X6S …… sequela
- T50.4 Poisoning by, adverse effect of and underdosing of drugs affecting uric acid metabolism
  - T50.4X Poisoning by, adverse effect of and underdosing of drugs affecting uric acid metabolism
    - T50.4X1 Poisoning by drugs affecting uric acid metabolism, accidental (unintentional)
      - T50.4X1A …… initial encounter
      - T50.4X1D …… subsequent encounter
      - T50.4X1S …… sequela
    - T50.4X2 Poisoning by drugs affecting uric acid metabolism, intentional self-harm
      - T50.4X2A …… initial encounter
      - T50.4X2D …… subsequent encounter
      - T50.4X2S …… sequela
    - T50.4X3 Poisoning by drugs affecting uric acid metabolism, assault
      - T50.4X3A …… initial encounter
      - T50.4X3D …… subsequent encounter
      - T50.4X3S …… sequela
    - T50.4X4 Poisoning by drugs affecting uric acid metabolism, undetermined
      - T50.4X4A …… initial encounter
      - T50.4X4D …… subsequent encounter
      - T50.4X4S …… sequela
    - T50.4X5 Adverse effect of drugs affecting uric acid metabolism
      - T50.4X5A …… initial encounter
      - T50.4X5D …… subsequent encounter
      - T50.4X5S …… sequela
    - T50.4X6 Underdosing of drugs affecting uric acid metabolism
      - T50.4X6A …… initial encounter
      - T50.4X6D …… subsequent encounter
      - T50.4X6S …… sequela
- T50.5 Poisoning by, adverse effect of and underdosing of appetite depressants
  - T50.5X Poisoning by, adverse effect of and underdosing of appetite depressants
    - T50.5X1 Poisoning by appetite depressants, accidental (unintentional)
      - T50.5X1A …… initial encounter
      - T50.5X1D …… subsequent encounter
      - T50.5X1S …… sequela
    - T50.5X2 Poisoning by appetite depressants, intentional self-harm
      - T50.5X2A …… initial encounter
      - T50.5X2D …… subsequent encounter
      - T50.5X2S …… sequela
    - T50.5X3 Poisoning by appetite depressants, assault
      - T50.5X3A …… initial encounter
      - T50.5X3D …… subsequent encounter
      - T50.5X3S …… sequela
    - T50.5X4 Poisoning by appetite depressants, undetermined
      - T50.5X4A …… initial encounter
      - T50.5X4D …… subsequent encounter
      - T50.5X4S …… sequela
    - T50.5X5 Adverse effect of appetite depressants
      - T50.5X5A …… initial encounter
      - T50.5X5D …… subsequent encounter
      - T50.5X5S …… sequela
    - T50.5X6 Underdosing of appetite depressants
      - T50.5X6A …… initial encounter
      - T50.5X6D …… subsequent encounter
      - T50.5X6S …… sequela
- T50.6 Poisoning by, adverse effect of and underdosing of antidotes and chelating agents
  - T50.6X Poisoning by, adverse effect of and underdosing of antidotes and chelating agents
    - T50.6X1 Poisoning by antidotes and chelating agents, accidental (unintentional)
      - T50.6X1A …… initial encounter
      - T50.6X1D …… subsequent encounter
      - T50.6X1S …… sequela
    - T50.6X2 Poisoning by antidotes and chelating agents, intentional self-harm
      - T50.6X2A …… initial encounter
      - T50.6X2D …… subsequent encounter
      - T50.6X2S …… sequela
    - T50.6X3 Poisoning by antidotes and chelating agents, assault
      - T50.6X3A …… initial encounter
      - T50.6X3D …… subsequent encounter
      - T50.6X3S …… sequela
    - T50.6X4 Poisoning by antidotes and chelating agents, undetermined
      - T50.6X4A …… initial encounter
      - T50.6X4D …… subsequent encounter
      - T50.6X4S …… sequela
    - T50.6X5 Adverse effect of antidotes and chelating agents
      - T50.6X5A …… initial encounter
      - T50.6X5D …… subsequent encounter
      - T50.6X5S …… sequela
    - T50.6X6 Underdosing of antidotes and chelating agents
      - T50.6X6A …… initial encounter
      - T50.6X6D …… subsequent encounter
      - T50.6X6S …… sequela
- T50.7 Poisoning by, adverse effect of and underdosing of analeptics and opioid receptor antagonists
  - T50.7X Poisoning by, adverse effect of and underdosing of analeptics and opioid receptor antagonists
    - T50.7X1 Poisoning by analeptics and opioid receptor antagonists, accidental (unintentional)
      - T50.7X1A …… initial encounter
      - T50.7X1D …… subsequent encounter
      - T50.7X1S …… sequela
    - T50.7X2 Poisoning by analeptics and opioid receptor antagonists, intentional self-harm
      - T50.7X2A …… initial encounter
      - T50.7X2D …… subsequent encounter
      - T50.7X2S …… sequela
    - T50.7X3 Poisoning by analeptics and opioid receptor antagonists, assault
      - T50.7X3A …… initial encounter
      - T50.7X3D …… subsequent encounter
      - T50.7X3S …… sequela
    - T50.7X4 Poisoning by analeptics and opioid receptor antagonists, undetermined
      - T50.7X4A …… initial encounter
      - T50.7X4D …… subsequent encounter
      - T50.7X4S …… sequela
    - T50.7X5 Adverse effect of analeptics and opioid receptor antagonists
      - T50.7X5A …… initial encounter
      - T50.7X5D …… subsequent encounter
      - T50.7X5S …… sequela
    - T50.7X6 Underdosing of analeptics and opioid receptor antagonists
      - T50.7X6A …… initial encounter
      - T50.7X6D …… subsequent encounter
      - T50.7X6S …… sequela
- T50.8 Poisoning by, adverse effect of and underdosing of diagnostic agents
  - T50.8X Poisoning by, adverse effect of and underdosing of diagnostic agents
    - T50.8X1 Poisoning by diagnostic agents, accidental (unintentional)
      - T50.8X1A …… initial encounter
      - T50.8X1D …… subsequent encounter
      - T50.8X1S …… sequela
    - T50.8X2 Poisoning by diagnostic agents, intentional self-harm
      - T50.8X2A …… initial encounter
      - T50.8X2D …… subsequent encounter
      - T50.8X2S …… sequela
    - T50.8X3 Poisoning by diagnostic agents, assault
      - T50.8X3A …… initial encounter
      - T50.8X3D …… subsequent encounter
      - T50.8X3S …… sequela
    - T50.8X4 Poisoning by diagnostic agents, undetermined
      - T50.8X4A …… initial encounter
      - T50.8X4D …… subsequent encounter
      - T50.8X4S …… sequela
    - T50.8X5 Adverse effect of diagnostic agents
      - T50.8X5A …… initial encounter
      - T50.8X5D …… subsequent encounter
      - T50.8X5S …… sequela
    - T50.8X6 Underdosing of diagnostic agents
      - T50.8X6A …… initial encounter
      - T50.8X6D …… subsequent encounter
      - T50.8X6S …… sequela
- T50.A Poisoning by, adverse effect of and underdosing of bacterial vaccines
  - T50.A1 Poisoning by, adverse effect of and underdosing of pertussis vaccine, including combinations with a pertussis component
    - T50.A11 Poisoning by pertussis vaccine, including combinations with a pertussis component, accidental (unintentional)
      - T50.A11A …… initial encounter
      - T50.A11D …… subsequent encounter
      - T50.A11S …… sequela
    - T50.A12 Poisoning by pertussis vaccine, including combinations with a pertussis component, intentional self-harm
      - T50.A12A …… initial encounter
      - T50.A12D …… subsequent encounter
      - T50.A12S …… sequela
    - T50.A13 Poisoning by pertussis vaccine, including combinations with a pertussis component, assault
      - T50.A13A …… initial encounter
      - T50.A13D …… subsequent encounter
      - T50.A13S …… sequela
    - T50.A14 Poisoning by pertussis vaccine, including combinations with a pertussis component, undetermined
      - T50.A14A …… initial encounter
      - T50.A14D …… subsequent encounter
      - T50.A14S …… sequela
    - T50.A15 Adverse effect of pertussis vaccine, including combinations with a pertussis component
      - T50.A15A …… initial encounter
      - T50.A15D …… subsequent encounter
      - T50.A15S …… sequela
    - T50.A16 Underdosing of pertussis vaccine, including combinations with a pertussis component
      - T50.A16A …… initial encounter
      - T50.A16D …… subsequent encounter
      - T50.A16S …… sequela
  - T50.A2 Poisoning by, adverse effect of and underdosing of mixed bacterial vaccines without a pertussis component
    - T50.A21 Poisoning by mixed bacterial vaccines without a pertussis component, accidental (unintentional)
      - T50.A21A …… initial encounter
      - T50.A21D …… subsequent encounter
      - T50.A21S …… sequela
    - T50.A22 Poisoning by mixed bacterial vaccines without a pertussis component, intentional self-harm
      - T50.A22A …… initial encounter
      - T50.A22D …… subsequent encounter
      - T50.A22S …… sequela
    - T50.A23 Poisoning by mixed bacterial vaccines without a pertussis component, assault
      - T50.A23A …… initial encounter
      - T50.A23D …… subsequent encounter
      - T50.A23S …… sequela
    - T50.A24 Poisoning by mixed bacterial vaccines without a pertussis component, undetermined
      - T50.A24A …… initial encounter
      - T50.A24D …… subsequent encounter
      - T50.A24S …… sequela
    - T50.A25 Adverse effect of mixed bacterial vaccines without a pertussis component
      - T50.A25A …… initial encounter
      - T50.A25D …… subsequent encounter
      - T50.A25S …… sequela
    - T50.A26 Underdosing of mixed bacterial vaccines without a pertussis component
      - T50.A26A …… initial encounter
      - T50.A26D …… subsequent encounter
      - T50.A26S …… sequela
  - T50.A9 Poisoning by, adverse effect of and underdosing of other bacterial vaccines
    - T50.A91 Poisoning by other bacterial vaccines, accidental (unintentional)
      - T50.A91A …… initial encounter
      - T50.A91D …… subsequent encounter
      - T50.A91S …… sequela
    - T50.A92 Poisoning by other bacterial vaccines, intentional self-harm
      - T50.A92A …… initial encounter
      - T50.A92D …… subsequent encounter
      - T50.A92S …… sequela
    - T50.A93 Poisoning by other bacterial vaccines, assault
      - T50.A93A …… initial encounter
      - T50.A93D …… subsequent encounter
      - T50.A93S …… sequela
    - T50.A94 Poisoning by other bacterial vaccines, undetermined
      - T50.A94A …… initial encounter
      - T50.A94D …… subsequent encounter
      - T50.A94S …… sequela
    - T50.A95 Adverse effect of other bacterial vaccines
      - T50.A95A …… initial encounter
      - T50.A95D …… subsequent encounter
      - T50.A95S …… sequela
    - T50.A96 Underdosing of other bacterial vaccines
      - T50.A96A …… initial encounter
      - T50.A96D …… subsequent encounter
      - T50.A96S …… sequela
- T50.B Poisoning by, adverse effect of and underdosing of viral vaccines
  - T50.B1 Poisoning by, adverse effect of and underdosing of smallpox vaccines
    - T50.B11 Poisoning by smallpox vaccines, accidental (unintentional)
      - T50.B11A …… initial encounter
      - T50.B11D …… subsequent encounter
      - T50.B11S …… sequela
    - T50.B12 Poisoning by smallpox vaccines, intentional self-harm
      - T50.B12A …… initial encounter
      - T50.B12D …… subsequent encounter
      - T50.B12S …… sequela
    - T50.B13 Poisoning by smallpox vaccines, assault
      - T50.B13A …… initial encounter
      - T50.B13D …… subsequent encounter
      - T50.B13S …… sequela
    - T50.B14 Poisoning by smallpox vaccines, undetermined
      - T50.B14A …… initial encounter
      - T50.B14D …… subsequent encounter
      - T50.B14S …… sequela
    - T50.B15 Adverse effect of smallpox vaccines
      - T50.B15A …… initial encounter
      - T50.B15D …… subsequent encounter
      - T50.B15S …… sequela
    - T50.B16 Underdosing of smallpox vaccines
      - T50.B16A …… initial encounter
      - T50.B16D …… subsequent encounter
      - T50.B16S …… sequela
  - T50.B9 Poisoning by, adverse effect of and underdosing of other viral vaccines
    - T50.B91 Poisoning by other viral vaccines, accidental (unintentional)
      - T50.B91A …… initial encounter
      - T50.B91D …… subsequent encounter
      - T50.B91S …… sequela
    - T50.B92 Poisoning by other viral vaccines, intentional self-harm
      - T50.B92A …… initial encounter
      - T50.B92D …… subsequent encounter
      - T50.B92S …… sequela
    - T50.B93 Poisoning by other viral vaccines, assault
      - T50.B93A …… initial encounter
      - T50.B93D …… subsequent encounter
      - T50.B93S …… sequela
    - T50.B94 Poisoning by other viral vaccines, undetermined
      - T50.B94A …… initial encounter
      - T50.B94D …… subsequent encounter
      - T50.B94S …… sequela
    - T50.B95 Adverse effect of other viral vaccines
      - T50.B95A …… initial encounter
      - T50.B95D …… subsequent encounter
      - T50.B95S …… sequela
    - T50.B96 Underdosing of other viral vaccines
      - T50.B96A …… initial encounter
      - T50.B96D …… subsequent encounter
      - T50.B96S …… sequela
- T50.Z Poisoning by, adverse effect of and underdosing of other vaccines and biological substances
  - T50.Z1 Poisoning by, adverse effect of and underdosing of immunoglobulin
    - T50.Z11 Poisoning by immunoglobulin, accidental (unintentional)
      - T50.Z11A …… initial encounter
      - T50.Z11D …… subsequent encounter
      - T50.Z11S …… sequela
    - T50.Z12 Poisoning by immunoglobulin, intentional self-harm
      - T50.Z12A …… initial encounter
      - T50.Z12D …… subsequent encounter
      - T50.Z12S …… sequela
    - T50.Z13 Poisoning by immunoglobulin, assault
      - T50.Z13A …… initial encounter
      - T50.Z13D …… subsequent encounter
      - T50.Z13S …… sequela
    - T50.Z14 Poisoning by immunoglobulin, undetermined
      - T50.Z14A …… initial encounter
      - T50.Z14D …… subsequent encounter
      - T50.Z14S …… sequela
    - T50.Z15 Adverse effect of immunoglobulin
      - T50.Z15A …… initial encounter
      - T50.Z15D …… subsequent encounter
      - T50.Z15S …… sequela
    - T50.Z16 Underdosing of immunoglobulin
      - T50.Z16A …… initial encounter
      - T50.Z16D …… subsequent encounter
      - T50.Z16S …… sequela
  - T50.Z9 Poisoning by, adverse effect of and underdosing of other vaccines and biological substances
    - T50.Z91 Poisoning by other vaccines and biological substances, accidental (unintentional)
      - T50.Z91A …… initial encounter
      - T50.Z91D …… subsequent encounter
      - T50.Z91S …… sequela
    - T50.Z92 Poisoning by other vaccines and biological substances, intentional self-harm
      - T50.Z92A …… initial encounter
      - T50.Z92D …… subsequent encounter
      - T50.Z92S …… sequela
    - T50.Z93 Poisoning by other vaccines and biological substances, assault
      - T50.Z93A …… initial encounter
      - T50.Z93D …… subsequent encounter
      - T50.Z93S …… sequela
    - T50.Z94 Poisoning by other vaccines and biological substances, undetermined
      - T50.Z94A …… initial encounter
      - T50.Z94D …… subsequent encounter
      - T50.Z94S …… sequela
    - T50.Z95 Adverse effect of other vaccines and biological substances
      - T50.Z95A …… initial encounter
      - T50.Z95D …… subsequent encounter
      - T50.Z95S …… sequela
    - T50.Z96 Underdosing of other vaccines and biological substances
      - T50.Z96A …… initial encounter
      - T50.Z96D …… subsequent encounter
      - T50.Z96S …… sequela
- T50.9 Poisoning by, adverse effect of and underdosing of other and unspecified drugs, medicaments and biological substances
  - T50.90 Poisoning by, adverse effect of and underdosing of unspecified drugs, medicaments and biological substances
    - T50.901 Poisoning by unspecified drugs, medicaments and biological substances, accidental (unintentional)
      - T50.901A …… initial encounter
      - T50.901D …… subsequent encounter
      - T50.901S …… sequela
    - T50.902 Poisoning by unspecified drugs, medicaments and biological substances, intentional self-harm
      - T50.902A …… initial encounter
      - T50.902D …… subsequent encounter
      - T50.902S …… sequela
    - T50.903 Poisoning by unspecified drugs, medicaments and biological substances, assault
      - T50.903A …… initial encounter
      - T50.903D …… subsequent encounter
      - T50.903S …… sequela
    - T50.904 Poisoning by unspecified drugs, medicaments and biological substances, undetermined
      - T50.904A …… initial encounter
      - T50.904D …… subsequent encounter
      - T50.904S …… sequela
    - T50.905 Adverse effect of unspecified drugs, medicaments and biological substances
      - T50.905A …… initial encounter
      - T50.905D …… subsequent encounter
      - T50.905S …… sequela
    - T50.906 Underdosing of unspecified drugs, medicaments and biological substances
      - T50.906A …… initial encounter
      - T50.906D …… subsequent encounter
      - T50.906S …… sequela
  - T50.99 Poisoning by, adverse effect of and underdosing of other drugs, medicaments and biological substances
    - T50.991 Poisoning by other drugs, medicaments and biological substances, accidental (unintentional)
      - T50.991A …… initial encounter
      - T50.991D …… subsequent encounter
      - T50.991S …… sequela
    - T50.992 Poisoning by other drugs, medicaments and biological substances, intentional self-harm
      - T50.992A …… initial encounter
      - T50.992D …… subsequent encounter
      - T50.992S …… sequela
    - T50.993 Poisoning by other drugs, medicaments and biological substances, assault
      - T50.993A …… initial encounter
      - T50.993D …… subsequent encounter
      - T50.993S …… sequela
    - T50.994 Poisoning by other drugs, medicaments and biological substances, undetermined
      - T50.994A …… initial encounter
      - T50.994D …… subsequent encounter
      - T50.994S …… sequela
    - T50.995 Adverse effect of other drugs, medicaments and biological substances
      - T50.995A …… initial encounter
      - T50.995D …… subsequent encounter
      - T50.995S …… sequela
    - T50.996 Underdosing of other drugs, medicaments and biological substances
      - T50.996A …… initial encounter
      - T50.996D …… subsequent encounter
      - T50.996S …… sequela