2020 ICD-10-CM Diagnosis Code K09.8

Other cysts of oral region, not elsewhere classified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • K09.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM K09.8 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of K09.8 - other international versions of ICD-10 K09.8 may differ.
Applicable To
  • Dermoid cyst
  • Epidermoid cyst
  • Lymphoepithelial cyst
  • Epstein's pearl
The following code(s) above K09.8 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to K09.8:
  • K00-K95
    2020 ICD-10-CM Range K00-K95

    Diseases of the digestive system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the digestive system
  • K09
    ICD-10-CM Diagnosis Code K09

    Cysts of oral region, not elsewhere classified

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Includes
    • lesions showing histological features both of aneurysmal cyst and of another fibro-osseous lesion
    Type 2 Excludes
    Cysts of oral region, not elsewhere classified
Approximate Synonyms
  • Dermoid cyst of mouth
  • Epstein's pearl
  • Epsteins pearl
  • Oral dermoid cyst
Clinical Information
  • A benign neoplasm comprised of a cyst, lined by mature epidermis-like tissue with dermal appendages.
  • A benign tumor resulting from abnormal embryonic development
  • A mature teratoma characterized by the presence of a cyst which is lined by mature tissue resembling the epidermis and the epidermal appendages. It occurs in the ovary, testis, and extragonadal sites including central nervous system and skin.
  • A tumor consisting of displaced ectodermal structures along the lines of embryonic fusion, the wall being formed of epithelium-lined connective tissue, including skin appendages, and containing keratin, sebum, and hair. (stedman, 25th ed)
  • A type of benign (not cancer) germ cell tumor (type of tumor that begins in the cells that give rise to sperm or eggs) that often contains several different types of tissue such as hair, muscle, and bone.
  • Intradermal or subcutaneous saclike structure, the wall of which is stratified epithelium containing keratohyalin granules.
ICD-10-CM K09.8 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 011 Tracheostomy for face, mouth & neck diagnoses or laryngectomy with mcc
  • 012 Tracheostomy for face, mouth & neck diagnoses or laryngectomy with cc
  • 013 Tracheostomy for face, mouth & neck diagnoses or laryngectomy without cc/mcc
  • 157 Dental and oral diseases with mcc
  • 158 Dental and oral diseases with cc
  • 159 Dental and oral diseases without cc/mcc

Convert K09.8 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to K09.8:
  • Cyst (colloid) (mucous) (simple) (retention)
    • dermoid - see Neoplasm, benign, by site
      • mouth K09.8
      • oral soft tissue K09.8
    • epidermal, epidermoid (inclusion) (see also Cyst, skin) L72.0
      ICD-10-CM Diagnosis Code L72.0

      Epidermal cyst

        2016 2017 2018 2019 2020 Billable/Specific Code
      • mouth K09.8
      • oral soft tissue K09.8
    • oral
      • region K09.9
        ICD-10-CM Diagnosis Code K09.9

        Cyst of oral region, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code
        • specified NEC K09.8
      • soft tissue K09.9
        ICD-10-CM Diagnosis Code K09.9

        Cyst of oral region, unspecified

          2016 2017 2018 2019 2020 Billable/Specific Code
        • specified NEC K09.8
    • buccal K09.8
    • lymphoepithelial, oral soft tissue K09.8
    • mouth K09.8
  • Epstein's
    • pearl K09.8
  • Pearl(s)
    • Epstein's K09.8

ICD-10-CM Codes Adjacent To K09.8
K08.56 Poor aesthetic of existing restoration of tooth
K08.59 Other unsatisfactory restoration of tooth
K08.8 Other specified disorders of teeth and supporting structures
K08.81 Primary occlusal trauma
K08.82 Secondary occlusal trauma
K08.89 Other specified disorders of teeth and supporting structures
K08.9 Disorder of teeth and supporting structures, unspecified
K09 Cysts of oral region, not elsewhere classified
K09.0 Developmental odontogenic cysts
K09.1 Developmental (nonodontogenic) cysts of oral region
K09.8 Other cysts of oral region, not elsewhere classified
K09.9 Cyst of oral region, unspecified
K11 Diseases of salivary glands
K11.0 Atrophy of salivary gland
K11.1 Hypertrophy of salivary gland
K11.2 Sialoadenitis
K11.20 …… unspecified
K11.21 Acute sialoadenitis
K11.22 Acute recurrent sialoadenitis
K11.23 Chronic sialoadenitis
K11.3 Abscess of salivary gland

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.