2026 ICD-10-CM Diagnosis Code Z01.21Encounter for dental examination and cleaning with abnormal findings

ICD-10-CM Codes›Z00–Z99›Z00-Z13›Z01

ICD-10-CM Z01.21
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z01.21 is a billable ICD-10-CM diagnosis code for encounter for dental examination and cleaning with abnormal findings. 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. Coders also document this condition as dental caries susceptibility - finding. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Any dental condition including traumatic injury; Caries, periodontitis, and other preventable dental conditions; and Medical examination/evaluation.

Code Identity

ICD-10-CM Code
Z01.21
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for dental examination and cleaning with abnormal findings
Short Description
Encounter for dental exam and cleaning w abnormal findings
Parent Code
Z01.2
Encounter for dental examination and cleaning

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ00-Z13Persons encountering health services for examinations
CategoryZ01Encounter for other special examination without complaint, suspected or reported diagnosis
This CodeZ01.21Encounter for dental examination and cleaning with abnormal findings

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z01.21.

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

Z01.21 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.

  • Dental caries susceptibility - finding
  • Susceptible to caries

Tabular List NotesGuidance

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

Use Additional Code

  • code to identify abnormal findings

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)
      • examination at health care facility (adult)
        • dental
          • with abnormal findings
    • Dental
      • examination
        • with abnormal findings
    • Examination(for) (following) (general) (of) (routine)
      • dental
        • with abnormal findings
    • Examination(for) (following) (general) (of) (routine)
      • teeth
        • with abnormal findings

Clinical ClassificationClinical

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

CCSR DEN001
Any dental condition including traumatic injury
Default principal diagnosis: inpatient No · outpatient No
CCSR DEN003
Caries, periodontitis, and other preventable dental conditions
Default principal diagnosis: inpatient No · outpatient No
CCSR FAC014
Medical examination/evaluation
Default principal diagnosis: inpatient No · outpatient Yes
CCSR DEN002
Nontraumatic dental conditions
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Dental Health

It's important to take care of your mouth and teeth starting in childhood. If you don't, you could have problems with your teeth and gums - like cavities or even tooth loss.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z01.21 to ICD-9-CMHistory

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

ICD-9-CM
V72.2 Dental examination
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 Z01.21Overview

Is Z01.21 (Encounter for dental examination and cleaning) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for dental examination and cleaning with abnormal findings on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z01.21 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because encounter for dental examination and cleaning with abnormal findings describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z01.21 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 dental examination and cleaning with abnormal findings on inpatient claims.

What is the ICD-9 equivalent of Z01.21?

Under the General Equivalence Mappings, encounter for dental examination and cleaning with abnormal findings converts to ICD-9-CM V72.2 (dental examination). The mapping is approximate, so confirm the match fits the documentation.