2020 ICD-10-CM Diagnosis Code M27.40

Unspecified cyst of jaw

    2016 2017 2018 2019 2020 Billable/Specific Code
  • M27.40 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 M27.40 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M27.40 - other international versions of ICD-10 M27.40 may differ.
Applicable To
  • Cyst of jaw NOS
The following code(s) above M27.40 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 M27.40:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • 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 musculoskeletal system and connective tissue
  • M26-M27
    2020 ICD-10-CM Range M26-M27

    Dentofacial anomalies [including malocclusion] and other disorders of jaw

    Type 1 Excludes
    • hemifacial atrophy or hypertrophy (Q67.4)
    • unilateral condylar hyperplasia or hypoplasia (M27.8)
    Dentofacial anomalies [including malocclusion] and other disorders of jaw
  • M27.4
    ICD-10-CM Diagnosis Code M27.4

    Other and unspecified cysts of jaw

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • cysts of oral region (K09.-)
    • latent bone cyst of jaw (M27.0)
    • Stafne's cyst (M27.0)
    Other and unspecified cysts of jaw
Approximate Synonyms
  • Aneurysmal cyst of jaw
  • Cyst of jaw
  • Cyst of maxilla
  • Hemorrhagic cyst of jaw
  • Jaw disorder, aneurysmal cyst
  • Jaw disorder, cyst
  • Jaw disorder, hemorrhagic cyst
  • Maxillary cyst
Clinical Information
  • Saccular lesions lined with epithelium and contained within pathologically formed cavities in the jaw; also nonepithelial cysts (pseudocysts) as they apply to the jaw, e.g., traumatic or solitary cyst, static bone cavity, and aneurysmal bone cyst. True jaw cysts are classified as odontogenic or nonodontogenic.
ICD-10-CM M27.40 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 M27.40 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 M27.40:
  • Cyst (colloid) (mucous) (simple) (retention)
    • bone (local) M85.60
      ICD-10-CM Diagnosis Code M85.60

      Other cyst of bone, unspecified site

        2016 2017 2018 2019 2020 Billable/Specific Code
      • specified type NEC M85.60
        ICD-10-CM Diagnosis Code M85.60

        Other cyst of bone, unspecified site

          2016 2017 2018 2019 2020 Billable/Specific Code
    • jaw (bone) M27.40
    • mandible M27.40
    • maxilla M27.40
    • solitary
      • jaw M27.40
    • alveolar process M27.40 (jaw bone)

ICD-10-CM Codes Adjacent To M27.40
M26.81 Anterior soft tissue impingement
M26.82 Posterior soft tissue impingement
M26.89 Other dentofacial anomalies
M26.9 Dentofacial anomaly, unspecified
M27 Other diseases of jaws
M27.0 Developmental disorders of jaws
M27.1 Giant cell granuloma, central
M27.2 Inflammatory conditions of jaws
M27.3 Alveolitis of jaws
M27.4 Other and unspecified cysts of jaw
M27.40 Unspecified cyst of jaw
M27.49 Other cysts of jaw
M27.5 Periradicular pathology associated with previous endodontic treatment
M27.51 Perforation of root canal space due to endodontic treatment
M27.52 Endodontic overfill
M27.53 Endodontic underfill
M27.59 Other periradicular pathology associated with previous endodontic treatment
M27.6 Endosseous dental implant failure
M27.61 Osseointegration failure of dental implant
M27.62 Post-osseointegration biological failure of dental implant
M27.63 Post-osseointegration mechanical failure of dental implant

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