2021 ICD-10-CM Code Y63.6

Underdosing and nonadministration of necessary drug, medicament or biological substance

Version 2021
Billable Code

Valid for Submission

Y63.6 is a billable diagnosis code used to specify a medical diagnosis of underdosing and nonadministration of necessary drug, medicament or biological substance. The code Y63.6 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

The ICD-10-CM code Y63.6 might also be used to specify conditions or terms like drug not available for administration or nonadministration of necessary drug or medicine.

ICD-10:Y63.6
Short Description:Undrdose & nonadmin of necess drug, medicament or biolg sub
Long Description:Underdosing and nonadministration of necessary drug, medicament or biological substance

Code Classification

Index of External Cause of Injuries

References found for the code Y63.6 in the External Cause of Injuries Index:

Approximate Synonyms

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

Convert Y63.6 to ICD-9 Code

The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code Y63.6 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.

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

Food and Drug Administration


[Learn More in MedlinePlus]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)