ICD10Check
CheckerBrowseOpen

Z91.12

⚠ Non-billable (Header)

Patient's intentional underdosing of medication regimen

Factors influencing health status and contact with health services (Z00-Z99)

⚠️ This is a category header code — not billable. Use a more specific child code below.

Check This Code

📋 Code Instructions

  • • Code first: underdosing of medication (T36-T50) with fifth or sixth character 6

⚠️ Excludes2

inherited from Z91.1

Rules from parent category Z91.1: Patient's noncompliance with medical treatment and regimen

  • • caregiver noncompliance with patient's medical treatment and regimen (Z91.A-)

Child Codes (2)

Z91.120Patient's intentional underdosing of medication regimen due to financial hardshipZ91.128Patient's intentional underdosing of medication regimen for other reason

🧪 Validate Combinations

Add Z91.12 to the Excludes Checker to validate against your full code list.

Open in Checker →

Code Information

CodeZ91.12
BillableNo — Header code
ParentZ91.1
CategoryFactors influencing health status and contact with health services (Z00-Z99)
Excludes10 rule(s)
Excludes21 note(s)
Child codes2

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)