2024 ICD-10-CM Diagnosis Code T50.4X6

Underdosing of drugs affecting uric acid metabolism

ICD-10-CM Code:
T50.4X6
ICD-10 Code for:
Underdosing of drugs affecting uric acid metabolism
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
      (T36-T50)
      • Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances
        (T50)

T50.4X6 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of underdosing of drugs affecting uric acid metabolism. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Underdosing of drugs affecting uric acid metabolism

Non-specific codes like T50.4X6 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for underdosing of drugs affecting uric acid metabolism:

  • Use T50.4X6A for initial encounter - BILLABLE CODE

  • Use T50.4X6D for subsequent encounter - BILLABLE CODE

  • Use T50.4X6S for sequela - BILLABLE CODE

Clinical Information

  • Allopurinol

    a xanthine oxidase inhibitor that decreases uric acid production. it also acts as an antimetabolite on some simpler organisms.
  • Benzbromarone

    uricosuric that acts by increasing uric acid clearance. it is used in the treatment of gout.
  • Colchicine

    a major alkaloid from colchicum autumnale l. and found also in other colchicum species. its primary therapeutic use is in the treatment of gout, but it has been used also in the therapy of familial mediterranean fever (periodic disease).
  • Probenecid

    the prototypical uricosuric agent. it inhibits the renal excretion of organic anions and reduces tubular reabsorption of urate. probenecid has also been used to treat patients with renal impairment, and, because it reduces the renal tubular excretion of other drugs, has been used as an adjunct to antibacterial therapy.
  • Sulfinpyrazone

    a uricosuric drug that is used to reduce the serum urate levels in gout therapy. it lacks anti-inflammatory, analgesic, and diuretic properties.
  • Urate Oxidase

    an enzyme that catalyzes the conversion of urate and unidentified products. it is a copper protein. the initial products decompose to form allantoin. ec 1.7.3.3.

Coding Guidelines

Underdosing refers to taking less of a medication than is prescribed by a provider or a manufacturer's instruction. Codes for underdosing should never be assigned as principal or first-listed codes. If a patient has a relapse or exacerbation of the medical condition for which the drug is prescribed because of the reduction in dose, then the medical condition itself should be coded.

The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances (T50). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Table of Drugs and Chemicals

The code is referenced 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.

According to ICD-10-CM coding guidelines it is advised to do not code directly from the Table of Drugs and Chemicals, instead always refer back to the Tabular List when doing the initial coding. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. It is important to use as many codes as necessary to specify all reported drugs, medicinal or chemical substances. If the same diagnosis code describes the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, utilize the code only once.

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
(self-harm)
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
AllopurinolT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
AtophanT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
BenemidT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
BenzbromaroneT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
CinchophenT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
ColchicineT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
EtebenecidT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
EthebenecidT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
NeocinchophenT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
OxipurinolT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
PhenoquinT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
ProbenecidT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
Spindle inactivatorT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
SulfinpyrazoneT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
SulphinpyrazoneT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
TisopurineT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
Urate oxidaseT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
Uric acid metabolism drug NECT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6
Uricosuric agentT50.4X1T50.4X2T50.4X3T50.4X4T50.4X5T50.4X6

Patient Education


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 in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.