ICD-10 Diagnosis Code Z18.32

Retained tooth

Diagnosis Code Z18.32

ICD-10: Z18.32
Short Description: Retained tooth
Long Description: Retained tooth
This is the 2019 version of the ICD-10-CM diagnosis code Z18.32

Valid for Submission
The code Z18.32 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Factors influencing health status and contact with health services (Z00–Z99)
    • Retained foreign body fragments (Z18)
      • Retained foreign body fragments (Z18)

Information for Medical Professionals


Code Edits
The following edits are applicable to this code:
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.

Convert to ICD-9
Present on Admission (POA)
The code Z18.32 is exempt from POA reporting.

Information for Patients


Tooth Disorders

Your teeth are made of a hard, bonelike material. Inside the tooth are nerves and blood vessels. You need your teeth for many activities you may take for granted. These include eating, speaking and even smiling. But tooth disorders are nothing to smile about. They include problems such as cavities (also known as tooth decay), infections, and injuries.

The most familiar symptom of a tooth problem is a toothache. Others include worn-down or loose teeth. It's important that you see a dentist if you have any problems with your teeth. Fortunately, you can prevent many tooth disorders by taking care of your teeth and keeping them clean.

  • Amelogenesis imperfecta (Medical Encyclopedia)
  • Broken or knocked out tooth (Medical Encyclopedia)
  • Bruxism (Medical Encyclopedia)
  • Dental crowns (Medical Encyclopedia)
  • Impacted tooth (Medical Encyclopedia)
  • Root canal (Medical Encyclopedia)
  • Tooth - abnormal colors (Medical Encyclopedia)
  • Tooth abscess (Medical Encyclopedia)
  • Toothaches (Medical Encyclopedia)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.

Present on Admission
The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement.

Previous Code
Z18.31
Next Code
Z18.33