2019/2020

  1. ICD-10-CM Codes
    2. ›
  2. S00-T88 Injury, poisoning and certain other consequences of external causes
    3. ›
  3. T66-T78 Other and unspecified effects of external causes
    4. ›
  4. T78- Adverse effects, not elsewhere classified
    5. ›

2020 ICD-10-CM Diagnosis Code T78

Adverse effects, not elsewhere classified

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • T78 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 T78 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of T78 - other international versions of ICD-10 T78 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 (T78) and the excluded code together.
  • complications of surgical and medical care NEC (T80-T88
    ICD-10-CM Range T80-T88

    Complications of surgical and medical care, not elsewhere classified

    Type 2 Excludes
    • any encounters with medical care for postprocedural conditions in which no complications are present, such as:
    • artificial opening status (Z93.-)
    • closure of external stoma (Z43.-)
    • fitting and adjustment of external prosthetic device (Z44.-)
    • burns and corrosions from local applications and irradiation (T20-T32)
    • complications of surgical procedures during pregnancy, childbirth and the puerperium (O00-O9A)
    • mechanical complication of respirator [ventilator] (J95.850)
    • poisoning and toxic effects of drugs and chemicals (T36-T65 with fifth or sixth character 1-4 or 6)
    • postprocedural fever (R50.82)
    • specified complications classified elsewhere, such as:
    • cerebrospinal fluid leak from spinal puncture (G97.0)
    • colostomy malfunction (K94.0-)
    • disorders of fluid and electrolyte imbalance (E86-E87)
    • functional disturbances following cardiac surgery (I97.0-I97.1)
    • intraoperative and postprocedural complications of specified body systems (D78.-, E36.-, E89.-, G97.3-, G97.4, H59.3-, H59.-, H95.2-, H95.3, I97.4-, I97.5, J95.6-, J95.7, K91.6-, L76.-, M96.-, N99.-)
    • ostomy complications (J95.0-, K94.-, N99.5-)
    • postgastric surgery syndromes (K91.1)
    • postlaminectomy syndrome NEC (M96.1)
    • postmastectomy lymphedema syndrome (I97.2)
    • postsurgical blind-loop syndrome (K91.2)
    • ventilator associated pneumonia (J95.851)
    Use Additional
    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
    • T80 Complications following infusion, transf...
    • T81 Complications of procedures, not elsewhe...
    • T82 Complications of cardiac and vascular pr...
    • T83 Complications of genitourinary prostheti...
    • T84 Complications of internal orthopedic pro...
    • T85 Complications of other internal prosthet...
    • T86 Complications of transplanted organs and...
    • T87 Complications peculiar to reattachment a...
    • T88 Other complications of surgical and medi...
    )
The following code(s) above T78 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 T78:
  • 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
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
Code annotations containing back-references to T78:
  • Type 1 Excludes: T75
    ICD-10-CM Diagnosis Code T75

    Other and unspecified effects of other external causes

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • adverse effects NEC (T78.-)
    Type 2 Excludes
ICD-10-CM Codes Adjacent To T78
T76.62XS …… sequela
T76.9 Unspecified maltreatment, suspected
T76.91 Unspecified adult maltreatment, suspected
T76.91XA …… initial encounter
T76.91XD …… subsequent encounter
T76.91XS …… sequela
T76.92 Unspecified child maltreatment, suspected
T76.92XA …… initial encounter
T76.92XD …… subsequent encounter
T76.92XS …… sequela
T78 Adverse effects, not elsewhere classified
T78.0 Anaphylactic reaction due to food
T78.00 Anaphylactic reaction due to unspecified food
T78.00XA …… initial encounter
T78.00XD …… subsequent encounter
T78.00XS …… sequela
T78.01 Anaphylactic reaction due to peanuts
T78.01XA …… initial encounter
T78.01XD …… subsequent encounter
T78.01XS …… sequela
T78.02 Anaphylactic reaction due to shellfish (crustaceans)

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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