ICD-10-CM Code T50.906

Underdosing of unspecified drugs, medicaments and biological substances

Version 2021 Replaced Code Non-Billable Code Underdosing

Not Valid for Submission

T50.906 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 unspecified drugs, medicaments and biological substances. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code T50.906 might also be used to specify conditions or terms like active ingredient availability decreased due to interaction or drug dose or medication dose too low or medication dose too low based on pharmacogenetic finding.

ICD-10:T50.906
Short Description:Underdosing of unsp drug/meds/biol subst
Long Description:Underdosing of unspecified drugs, medicaments and biological substances

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

Replaced Code

This code was replaced in the 2021 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, 2020. This code was replaced for the FY 2021 (October 1, 2020 - September 30, 2021).

  • K59.03 - Drug induced constipation

Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Active ingredient availability decreased due to interaction
  • Drug dose
  • Medication dose too low
  • Medication dose too low based on pharmacogenetic finding

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 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
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Table of Drugs and Chemicals

The code T50.906 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
Acidifying agent NECT50.901T50.902T50.903T50.904T50.905T50.906
Adjunct, pharmaceuticalT50.901T50.902T50.903T50.904T50.905T50.906
Alkalinizing agents (medicinal)T50.901T50.902T50.903T50.904T50.905T50.906
Alkalizing agent NECT50.901T50.902T50.903T50.904T50.905T50.906
Biological substance NECT50.901T50.902T50.903T50.904T50.905T50.906
Dietetic drug NECT50.901T50.902T50.903T50.904T50.905T50.906
Drug NECT50.901T50.902T50.903T50.904T50.905T50.906
Drug NEC
  »specified NEC
T50.901T50.902T50.903T50.904T50.905T50.906
Elemental dietT50.901T50.902T50.903T50.904T50.905T50.906
Excipients, pharmaceuticalT50.901T50.902T50.903T50.904T50.905T50.906
Headache cures, drugs, powders NECT50.901T50.902T50.903T50.904T50.905T50.906
Lactose (as excipient)T50.901T50.902T50.903T50.904T50.905T50.906
Lipotropic drug NECT50.901T50.902T50.903T50.904T50.905T50.906
Medicament NECT50.901T50.902T50.903T50.904T50.905T50.906
Nutritional supplementT50.901T50.902T50.903T50.904T50.905T50.906
PharmaceuticalT50.901T50.902T50.903T50.904T50.905T50.906
Pharmaceutical
  »adjunct NEC
T50.901T50.902T50.903T50.904T50.905T50.906
Pharmaceutical
  »excipient NEC
T50.901T50.902T50.903T50.904T50.905T50.906
Pharmaceutical
  »sweetener
T50.901T50.902T50.903T50.904T50.905T50.906
Pharmaceutical
  »viscous agent
T50.901T50.902T50.903T50.904T50.905T50.906
SaccharinT50.901T50.902T50.903T50.904T50.905T50.906
Salt substituteT50.901T50.902T50.903T50.904T50.905T50.906
Salt-replacing drugT50.901T50.902T50.903T50.904T50.905T50.906
Sodium-free saltT50.901T50.902T50.903T50.904T50.905T50.906
Soothing syrupT50.901T50.902T50.903T50.904T50.905T50.906
StarchT50.901T50.902T50.903T50.904T50.905T50.906
Stone-dissolving drugT50.901T50.902T50.903T50.904T50.905T50.906
SweetenerT50.901T50.902T50.903T50.904T50.905T50.906
Tablets [See Also: specified substance]T50.901T50.902T50.903T50.904T50.905T50.906
Tonic NECT50.901T50.902T50.903T50.904T50.905T50.906
Viscous agentT50.901T50.902T50.903T50.904T50.905T50.906

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

  • 6 Tips to Avoid Medication Mistakes (Food and Drug Administration)
  • How and when to get rid of unused medicines (Medical Encyclopedia)
  • Keeping your medications organized (Medical Encyclopedia)
  • Medication safety during your hospital stay (Medical Encyclopedia)
  • Medication safety: Filling your prescription (Medical Encyclopedia)
  • Storing your medicines (Medical Encyclopedia)
  • Taking medicine at home - create a routine (Medical Encyclopedia)

[Learn More]