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ICD10BillableValid for clinical use

ICD-10 Code K09.8: Other cysts of oral region, not elsewhere classified

K09.8 is a billable ICD-10 diagnosis code used to classify Other cysts of oral region, not elsewhere classified in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the digestive system (K00-K95).

When is it used?

  • May be used when a clinician documents other cysts of oral region, not elsewhere classified in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
11Diseases of the digestive system (K00-K95)
block
K00-K14Diseases of oral cavity and salivary glands
category
K09Cysts of oral region, not elsewhere classified
currentK09

Official coding notes

Inclusion terms
  • Dermoid cyst
  • Epidermoid cyst
  • Lymphoepithelial cyst
  • Epstein's pearl

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

GastroenterologistGeneral Physician

Coverage-related procedures and services

CPT 96105high
ASSESSMENT OF APHASIA (INCLUDES ASSESSMENT OF EXPRESSIVE AND RECEPTIVE SPEECH AND LANGUAGE FUNCTION, LANGUAGE COMPREHENSION, SPEECH PRODUCTION ABILITY, READING, SPELLING, WRITING, EG, BY BOSTON DIAGNOSTIC APHASIA EXAMINATION) WITH INTERPRETATION AND REPORT, PER HOUR
Source: CMS coverage guidance
CPT 92524high
BEHAVIORAL AND QUALITATIVE ANALYSIS OF VOICE AND RESONANCE
Source: CMS coverage guidance
CPT 72126high
COMPUTED TOMOGRAPHY, CERVICAL SPINE; WITH CONTRAST MATERIAL
Source: CMS coverage guidance
CPT 72125high
COMPUTED TOMOGRAPHY, CERVICAL SPINE; WITHOUT CONTRAST MATERIAL
Source: CMS coverage guidance
CPT 72127high
COMPUTED TOMOGRAPHY, CERVICAL SPINE; WITHOUT CONTRAST MATERIAL, FOLLOWED BY CONTRAST MATERIAL(S) AND FURTHER SECTIONS
Source: CMS coverage guidance
CPT 70460high
COMPUTED TOMOGRAPHY, HEAD OR BRAIN; WITH CONTRAST MATERIAL(S)
Source: CMS coverage guidance

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
K09.8

Common synonyms

Other cysts of oral region, not elsewhere classified

Frequently asked questions

Code details

CodeK09.8
SystemICD10
Display nameOther cysts of oral region, not elsewhere classified
ChapterDiseases of the digestive system (K00-K95)
BlockDiseases of oral cavity and salivary glands

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)Cyst(colloid) (mucous) (simple) (retention)Epstein'sPearl(s)

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.