Z91.128
Billable codePatient's intentional underdosing of medication regimen for other reason
The ICD-10 code for patient's intentional underdosing of medication regimen for other reason is Z91.128.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- Z91.120Patient's intentional underdosing of medication regimen due to financial hardship
- Z91.128Patient's intentional underdosing of medication regimen for other reason
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- V1581Approximate match
Associated MS-DRGs
Z91.128 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.