2025
ICD-10-CM
Diagnosis
Code

Z91.12 Patient's intentional underdosing of medication regimen

  • Non-billable
  • 2016–2025

Z91.12 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Patient's intentional underdosing of medication regimen.

Code first

  • Underdosing of medication (T36-T50) with fifth or sixth character 6

Codes

Versions

  1. 2025

    Code changed

    • Type 1 excludes

        • adverse effect of prescribed drug taken as directed- code to adverse effect
        • poisoning (overdose) -code to poisoning

  2. 2024

    No changes

  3. 2023

    No changes

  4. 2022

    No changes

  5. 2021

    No changes

  6. 2020

    No changes

  7. 2019

    No changes

  8. 2018

    No changes

  9. 2017

    No changes

  10. 2016

    New code