Patient's intentional underdosing of medication regimen Z91.12

The ICD10 code for the diagnosis "Patient's intentional underdosing of medication regimen" is "Z91.12". Z91.12 is NOT a 'valid' or 'billable' ICD10 code. Please select a more specific diagnosis below.

  • Z91.12 should not be used for reimbursement purposes. Please select a more specific diagnosis below.
  • The 2019 edition of ICD-10-CM Z91.12 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of Z91.12 - other international versions of ICD-10 Z91.12 may differ.
Code First:
  • underdosing of medication (T36-T50) with fifth or sixth character 6
Type 1 Excludes:
  • adverse effect of prescribed drug taken as directed- code to adverse effect
  • poisoning (overdose) -code to poisoning

Codes: = Billable

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.