Z79.631 - Long term (current) use of antimetabolite agent
ICD-10-CM Chapter 21: Factors influencing health status and contact with health services · Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) · Subcategory of Z79.63 · FY2027
Inclusion terms listed under Z79.631 in the ICD-10-CM tabular list.
- Long term (current) use of 5-fluorouracil
- Long term (current) use of 6-mercaptopurine
- Long term (current) use of cytarabine
- Long term (current) use of methotrexate
Includes, Excludes and Coding Notes
Not part of this code; report both codes when the patient has both conditions.
- long term (current) use of steroids (Z79.5-)
- long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-)
Conditions this code covers.
- long term (current) drug use for prophylactic purposes
Not part of this code; report both codes when the patient has both conditions.
- drug abuse and dependence (F11-F19)
- drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)
Report an additional code when both conditions apply.
- any therapeutic drug level monitoring (Z51.81)
Report an additional code when both conditions apply.
- any follow-up examination (Z08-Z09)
Instructional notes from the ICD-10-CM tabular list.
- 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.
Related condition guides
Documentation requirements, coding pitfalls and FAQs for conditions coded with Z79.631.
Codes at the same level as Z79.631