Z79.630 – Long term (current) use of alkylating agent

ICD-10-CM 2027 diagnosis code · Persons with potential health hazards related to family and personal history and certain conditions influencing health status

Billable code

ICD-10-CM code Z79.630

Code: Z79.630 (claims format: Z79630)
Description: Long term (current) use of alkylating agent
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 21. Factors influencing health status and contact with health services (Z00-Z99)
Block: Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status
Parent codes: Z79 › Z79.6 › Z79.63

Notes for Z79.630

Applicable to:

Long term (current) use of chlorambucil
Long term (current) use of cisplatin
Long term (current) use of cyclophosphamide

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Z79 – Long term (current) drug therapy

Includes:

long term (current) drug use for prophylactic purposes

Excludes2 (not included here):

drug abuse and dependence (F11-F19)
drug use complicating pregnancy, childbirth, and the puerperium (O99.32-)

Code also:

any therapeutic drug level monitoring (Z51.81)

Z79.6 – Long term (current) use of immunomodulators and immunosuppressants

Excludes2 (not included here):

long term (current) use of steroids (Z79.5-)
long term (current) use of agents affecting estrogen receptors and estrogen levels (Z79.81-)

Block Z77-Z99

Code also:

any follow-up examination (Z08-Z09)

Index terms for Z79.630

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in Z79.63

Frequently asked questions

What is ICD-10 code Z79.630?

Z79.630 is the ICD-10-CM code for long term (current) use of alkylating agent, in the block Z77-Z99 (Persons with potential health hazards related to family and personal history and certain conditions influencing health status).

Is Z79.630 a billable code?

Yes. Z79.630 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Z79.630 belong to?

It belongs to category Z79 – Long term (current) drug therapy.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.