What does ICD-10 code Z09 mean?

Z09 is the ICD-10-CM diagnosis code for Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm. Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

Is Z09 a billable ICD-10 code?

Yes, Z09 is a billable ICD-10-CM code that can be used on medical claims.

What chapter is Z09 in?

Z09 is classified under Chapter 21: Factors influencing health status and contact with health services (Z00-Z99), Section Z00-Z13: Persons encountering health services for examinations (Z00-Z13).

What are the includes and excludes for Z09?

Excludes1 (not coded here): aftercare following medical care (Z43-Z49, Z51); surveillance of contraception (Z30.4-); surveillance of prosthetic and other medical devices (Z44-Z46).

Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

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The ICD-10-CM code for Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm is Z09 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter: 21: Factors influencing health status and contact with health services (Z00-Z99)
Section: Z00-Z13: Persons encountering health services for examinations (Z00-Z13)
Category Z09: 1 code (1 billable)
FY2026 Status: Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to Z09:

Examination (for) (following) (general) (of) (routine) › follow-up (routine) (following)
Admission (for) › follow-up examination
Examination (for) (following) (general) (of) (routine) › follow-up (routine) (following) › psychotherapy
Examination (for) (following) (general) (of) (routine) › follow-up (routine) (following) › fracture
Examination (for) (following) (general) (of) (routine) › follow-up (routine) (following) › radiotherapy NEC
Examination (for) (following) (general) (of) (routine) › following › treatment (for)
Examination (for) (following) (general) (of) (routine) › follow-up (routine) (following) › surgery NEC
Examination (for) (following) (general) (of) (routine) › follow-up (routine) (following) › chemotherapy NEC

Excludes1

Not coded here. These conditions should NOT be coded together with Z09.

aftercare following medical care (Z43-Z49, Z51)
surveillance of contraception (Z30.4-)
surveillance of prosthetic and other medical devices (Z44-Z46)

Use Additional Code

code to identify any applicable history of disease code (Z86.-, Z87.-)

Inclusion Terms

Medical surveillance following completed treatment

U.S. Hospital Utilization

An estimated 5,825 U.S. inpatient stays in 2023 included Z09 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Follow-up after resolved infection; no residual & negative test

(j) Follow-up visits after COVID-19 infection has resolved For individuals who previously had COVID-19, without residual symptom(s) or condition(s), and are being seen for follow-up evaluation, and COVID-19 test results are negative, assign codes Z09, Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm, and Z86.16, Personal history of COVID-19.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.1.g.1.j

Follow-up Z codes/categories list and Z08/Z09 use after any modality

The follow-up Z codes/categories: Z08 Encounter for follow-up examination after completed treatment for malignant neoplasm Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm Codes Z08, Encounter for follow-up examination after completed treatment for malignant neoplasm, and Z09, Encounter for follow up examination after completed treatment for conditions other than malignant neoplasm, may be assigned following any type of completed treatment modality (including both medical and surgical treatments). Z39 Encounter for maternal postpartum care and examination

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.21.c.8

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026