2019

  1. ICD-10-CM Codes
    2. ›
  2. S00-T88 Injury, poisoning and certain other consequences of external causes
    3. ›
  3. T36-T50 Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
    4. ›
  4. T46- Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system
    5. ›

2019 ICD-10-CM Diagnosis Code T46.5

Poisoning by, adverse effect of and underdosing of other antihypertensive drugs

    2016 2017 2018 2019 Non-Billable/Non-Specific Code
  • T46.5 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Antihypertensive drugs
  • The 2019 edition of ICD-10-CM T46.5 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of T46.5 - other international versions of ICD-10 T46.5 may differ.
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (T46.5) and the excluded code together.
  • poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists (
    ICD-10-CM Diagnosis Code T44.7

    Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    T44.7
    )
  • poisoning by, adverse effect of and underdosing of calcium-channel blockers (
    ICD-10-CM Diagnosis Code T46.1

    Poisoning by, adverse effect of and underdosing of calcium-channel blockers

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    T46.1
    )
  • poisoning by, adverse effect of and underdosing of diuretics (
    ICD-10-CM Diagnosis Code T50.0

    Poisoning by, adverse effect of and underdosing of mineralocorticoids and their antagonists

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    T50.0-
    ICD-10-CM Diagnosis Code T50.2

    Poisoning by, adverse effect of and underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Applicable To
    • Poisoning by, adverse effect of and underdosing of acetazolamide
    T50.2
    )
The following code(s) above T46.5 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to T46.5:
  • S00-T88
    2019 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    Note
    • 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
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
  • T36-T50
    2019 ICD-10-CM Range T36-T50

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

    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
    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.
    Type 1 Excludes
    • toxic reaction to local anesthesia in pregnancy (O29.3-)
    Type 2 Excludes
    • 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)
    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-)
    Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
  • T46
    ICD-10-CM Diagnosis Code T46

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

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • poisoning by, adverse effect of and underdosing of metaraminol (T44.4)
    Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to T46.5:
  • Type 1 Excludes: T43.5
    , T44.8
    , T44.8
    ICD-10-CM Diagnosis Code T43.5

    Poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and neuroleptics

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • poisoning by, adverse effect of and underdosing of rauwolfia (T46.5-)
    ICD-10-CM Diagnosis Code T44.8

    Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic-neuron- blocking agents

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • poisoning by, adverse effect of and underdosing of clonidine (T46.5)
    • poisoning by, adverse effect of and underdosing of guanethidine (T46.5)
    ICD-10-CM Diagnosis Code T44.8

    Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic-neuron- blocking agents

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • poisoning by, adverse effect of and underdosing of clonidine (T46.5)
    • poisoning by, adverse effect of and underdosing of guanethidine (T46.5)
ICD-10-CM Codes Adjacent To T46.5
T46.4X4D …… subsequent encounter
T46.4X4S …… sequela
T46.4X5 Adverse effect of angiotensin-converting-enzyme inhibitors
T46.4X5A …… initial encounter
T46.4X5D …… subsequent encounter
T46.4X5S …… sequela
T46.4X6 Underdosing of angiotensin-converting-enzyme inhibitors
T46.4X6A …… initial encounter
T46.4X6D …… subsequent encounter
T46.4X6S …… sequela
T46.5 Poisoning by, adverse effect of and underdosing of other antihypertensive drugs
T46.5X Poisoning by, adverse effect of and underdosing of other antihypertensive drugs
T46.5X1 Poisoning by other antihypertensive drugs, accidental (unintentional)
T46.5X1A …… initial encounter
T46.5X1D …… subsequent encounter
T46.5X1S …… sequela
T46.5X2 Poisoning by other antihypertensive drugs, intentional self-harm
T46.5X2A …… initial encounter
T46.5X2D …… subsequent encounter
T46.5X2S …… sequela
T46.5X3 Poisoning by other antihypertensive drugs, assault

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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