2020 ICD-10-CM Diagnosis Code T45.3X1

Poisoning by enzymes, accidental (unintentional)

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • T45.3X1 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM T45.3X1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of T45.3X1 - other international versions of ICD-10 T45.3X1 may differ.
Applicable To
  • Poisoning by enzymes NOS
The following code(s) above T45.3X1 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 T45.3X1:
  • S00-T88
    2020 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
    2020 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
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
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To T45.3X1
T45.2X5 Adverse effect of vitamins
T45.2X5A …… initial encounter
T45.2X5D …… subsequent encounter
T45.2X5S …… sequela
T45.2X6 Underdosing of vitamins
T45.2X6A …… initial encounter
T45.2X6D …… subsequent encounter
T45.2X6S …… sequela
T45.3 Poisoning by, adverse effect of and underdosing of enzymes
T45.3X Poisoning by, adverse effect of and underdosing of enzymes
T45.3X1 Poisoning by enzymes, accidental (unintentional)
T45.3X1A …… initial encounter
T45.3X1D …… subsequent encounter
T45.3X1S …… sequela
T45.3X2 Poisoning by enzymes, intentional self-harm
T45.3X2A …… initial encounter
T45.3X2D …… subsequent encounter
T45.3X2S …… sequela
T45.3X3 Poisoning by enzymes, assault
T45.3X3A …… initial encounter
T45.3X3D …… subsequent encounter

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