2026 ICD-10-CM Diagnosis Code Z98.818Other dental procedure status

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z98

ICD-10-CM Z98.818
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z98.818 is a billable ICD-10-CM diagnosis code for other dental procedure status. 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 Implant, device or graft related encounter.

Code Identity

ICD-10-CM Code
Z98.818
Billable Status
Yes — Valid for Submission
Code Describes
Other dental procedure status
Short Description
Other dental procedure status
Same as the full description in the CMS dataset.
Parent Code
Z98.81
Dental procedure status

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
CategoryZ98Other postprocedural states
This CodeZ98.818Other dental procedure status

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z98.818.

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

Z98.818 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 structure displaced into maxillary sinus
  • Displacement of root of tooth into maxillary sinus due to and following extraction of tooth
  • Full restoration of crown of tooth needed due to previous endodontic treatment
  • History of revision of root canal treatment of anterior tooth
  • History of revision of root canal treatment of canine tooth
  • History of revision of root canal treatment of incisor tooth
  • History of revision of root canal treatment of molar tooth
  • History of revision of root canal treatment of premolar tooth
  • History of root canal treatment
  • History of surgical procedure on mouth
  • History of tooth extraction
  • History of vital pulpotomy
  • Orthodontic treatment stopped
  • Procedure needed
  • Tooth cavity drilled and filled
  • Tooth restored - fixed bridge
  • Tooth restored with crown
  • Tooth restored with gold inlay

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.

    • Status(post)
      • dental
    • Status(post)
      • dental
        • specified NEC
    • Status(post)
      • postoperative (postprocedural) NEC
        • dental
    • Status(post)
      • postoperative (postprocedural) NEC
        • dental
          • specified NEC

Clinical ClassificationClinical

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

CCSR FAC009
Implant, device or graft related encounter
Default principal diagnosis: inpatient No · outpatient Yes

Convert Z98.818 to ICD-9-CMHistory

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

ICD-9-CM
V45.84 Dental restoratn status
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 Z98.818Overview

Is Z98.818 (Dental procedure status) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other dental procedure status on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z98.818 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because other dental procedure status describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z98.818 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 other dental procedure status on inpatient claims.

What is the ICD-9 equivalent of Z98.818?

Under the General Equivalence Mappings, other dental procedure status converts to ICD-9-CM V45.84 (dental restoratn status). The mapping is approximate, so confirm the match fits the documentation.