Z91.120
Patient's intentional underdosing of medication regimen due to financial hardship
Z91.120 (also written Z91120) is a billable ICD-10-CM diagnosis code for patient's intentional underdosing of medication regimen due to financial hardship. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 62 codes in category Z91 (Personal risk factors, not elsewhere classified). The Alphabetic Index lists it under 2 entries. Its coding notes include a Code first instruction, a Code also instruction and 6 Excludes2 entries.
Code first
If the underlying condition listed here is present and known, sequence it first.
Code also
Two codes may be needed to describe the condition. This note gives no sequencing order.
- , if applicable, to identify underdosing of specific drug (T36-T50 with final character 6)
Also from chapter/block level (1 note)
- any follow-up examination (Z08-Z09)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- caregiver noncompliance with patient's medical treatment and regimen (Z91.A-)
Notes
Also from chapter/block level (3 notes)
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 2 entries