ICD-10 Code T50.Z96

Underdosing of other vaccines and biological substances

Version 2019 Replaced Code Non-Billable Code Underdosing

Not Valid for Submission

T50.Z96 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of underdosing of other vaccines and biological substances. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10: T50.Z96
Short Description:Underdosing of other vaccines and biological substances
Long Description:Underdosing of other vaccines and biological substances

Consider the following ICD-10 codes with a higher level of specificity:

  • T50.Z96A - Underdosing of other vaccines and biological substances, initial encounter
  • T50.Z96D - Underdosing of other vaccines and biological substances, subsequent encounter
  • T50.Z96S - Underdosing of other vaccines and biological substances, sequela

Replaced Code

This code was replaced in the 2020 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2019. This code was replaced for the FY 2020 (October 1, 2019 - September 30, 2020).

  • K59.03 - Drug induced constipation

Code Classification

  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances (T36-T50)
      • Diuretics and oth and unsp drug/meds/biol subst (T50)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (first year ICD-10-CM implemented into the HIPAA mandated code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Medical Professionals

Table of Drugs and Chemicals

The code T50.Z96 is included in the Table of Drugs and Chemicals, this table contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. Use as many codes as necessary to describe all reported drugs, medicinal or chemical substances.

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
self-harm
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
Glandular extract (medicinal) NECT50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Pegademase, bovineT50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NECT50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »antineoplastic
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »with
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »with
      »other bacterial component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »with
      »pertussis component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »with
      »viral-rickettsial component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »bacterial NEC
    »mixed NEC
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »BCG
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »cholera
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »diphtheria
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »diphtheria
    »with tetanus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »diphtheria
    »with tetanus
      »and pertussis
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »influenza
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »measles
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »measles
    »with mumps and rubella
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »meningococcal
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »mumps
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »paratyphoid
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »pertussis
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »pertussis
    »with diphtheria
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »pertussis
    »with diphtheria
      »and tetanus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »pertussis
    »with other component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »plague
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »poliomyelitis
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »poliovirus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rabies
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »respiratory syncytial virus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rickettsial NEC
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rickettsial NEC
    »with
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rickettsial NEC
    »with
      »bacterial component
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »Rocky Mountain spotted fever
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »rubella
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »sabin oral
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »smallpox
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »TAB
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »tetanus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »typhoid
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »typhus
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »viral NEC
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96
Vaccine NEC
  »yellow fever
T50.Z91T50.Z92T50.Z93T50.Z94T50.Z95T50.Z96

Information for Patients


Medication Errors

Medicines treat infectious diseases, prevent problems from chronic diseases, and ease pain. But medicines can also cause harmful reactions if not used correctly. Errors can happen in the hospital, at the health care provider's office, at the pharmacy, or at home. You can help prevent errors by

  • Knowing your medicines. When you get a prescription, ask the name of the medicine and check to make sure that the pharmacy gave you the right medicine. Make sure that you understand how often you should take the medicine and how long you should take it.
  • Keeping a list of medicines.
    • Write down all of the medicines that you are taking, including the names of your medicines, how much you take, and when you take them. Make sure to include any over-the-counter medicines, vitamins, supplements, and herbs that you take.
    • List the medicines that you are allergic to or that have caused you problems in the past.
    • Take this list with you every time you see a health care provider.
  • Reading medicine labels and following the directions. Don't just rely on your memory - read the medication label every time. Be especially careful when giving medicines to children.
  • Asking questions. If you don't know the answers to these questions, ask your health care provider or pharmacist:
    • Why am I taking this medicine?
    • What are the common side effects?
    • What should I do if I have side effects?
    • When should I stop this medicine?
    • Can I take this medicine with the other medicines and supplements on my list?
    • Do I need to avoid certain foods or alcohol while taking this medicine?

Food and Drug Administration


[Learn More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.