2026 ICD-10-CM Diagnosis Code Z09Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

ICD-10-CM Codes›Z00–Z99›Z00-Z13›Z09

ICD-10-CM Z09
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z09 is a billable ICD-10-CM diagnosis code for encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other aftercare encounter.

Code Identity

ICD-10-CM Code
Z09
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
Chapter
Z00-Z13
Persons encountering health services for examinations

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ00-Z13Persons encountering health services for examinations
CategoryZ09Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
This CodeZ09Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z09.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z09 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chiropody follow-up
  • Follow-up
  • Follow-up 1 day
  • Follow-up 1 month
  • Follow-up 1 week
  • Follow-up 1 year
  • Follow-up 2 weeks
  • Follow-up 2-3 days
  • Follow-up 2-3 months
  • Follow-up 3 weeks
  • Follow-up 4-6 days
  • Follow-up 4-6 months
  • Follow-up 6 months
  • Follow-up 6 weeks
  • Follow-up 7-11 months
  • Fracture therapy follow-up
  • Heart failure follow-up
  • High risk implant follow-up
  • Hypertension monitoring check done
  • Hypertension monitoring status
  • Hypertension:follow-up default
  • Midwife follow up
  • Post-discharge follow-up
  • Radiotherapy follow-up
  • Retinopathy follow up
  • Seen in hypertension clinic
  • Surgical follow-up
  • Surgical follow-up - normal
  • Transplant follow-up
  • Under follow-up

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Medical surveillance following completed treatment

Use Additional Code

  • code to identify any applicable history of disease code Z86 Z87

Type 1 Excludes

  • aftercare following medical care Z43 Z49 Z51
  • surveillance of contraception Z30.4
  • surveillance of prosthetic and other medical devices Z44 Z46

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Admission(for)
      • follow-up examination
    • Examination(for) (following) (general) (of) (routine)
      • following
        • treatment (for)
    • Examination(for) (following) (general) (of) (routine)
      • following
        • treatment (for)
          • combined NEC
    • Examination(for) (following) (general) (of) (routine)
      • following
        • treatment (for)
          • combined NEC
            • fracture
    • Examination(for) (following) (general) (of) (routine)
      • following
        • treatment (for)
          • mental disorder
    • Examination(for) (following) (general) (of) (routine)
      • following
        • treatment (for)
          • specified condition NEC
    • Examination(for) (following) (general) (of) (routine)
      • follow-up (routine) (following)
    • Examination(for) (following) (general) (of) (routine)
      • follow-up (routine) (following)
        • chemotherapy NEC
    • Examination(for) (following) (general) (of) (routine)
      • follow-up (routine) (following)
        • fracture
    • Examination(for) (following) (general) (of) (routine)
      • follow-up (routine) (following)
        • psychotherapy
    • Examination(for) (following) (general) (of) (routine)
      • follow-up (routine) (following)
        • radiotherapy NEC
    • Examination(for) (following) (general) (of) (routine)
      • follow-up (routine) (following)
        • surgery NEC
    • Examination(for) (following) (general) (of) (routine)
      • psychiatric NEC
        • follow-up not needing further care

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC010
Other aftercare encounter
Default principal diagnosis: inpatient No · outpatient Yes

Convert Z09 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V67.00 Follow-up surgery NOS
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.09 Follow-up surgery NEC
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.1 Radiotherapy follow-up
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.2 Chemotherapy follow-up
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.3 Psychiatric follow-up
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.4 FU exam treatd healed fx
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.51 High-risk rx NEC exam
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.59 Follow-up exam NEC
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.6 Comb treatment follow-up
Approximate The match is approximate rather than exact.
ICD-9-CM
V67.9 Follow-up exam NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z09Overview

Is Z09 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z09 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z09 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm on inpatient claims.

What is the ICD-9 equivalent of Z09?

Under the General Equivalence Mappings, encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm converts to ICD-9-CM V67.00 (follow-up surgery NOS), V67.09 (follow-up surgery NEC), and V67.1 (radiotherapy follow-up). The mapping is approximate, so confirm the match fits the documentation.