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  6. 2024 ICD-10-CM Code M26.04

2024 ICD-10-CM Diagnosis Code M26.04

Mandibular hypoplasia

ICD-10-CM Code:
M26.04
ICD-10 Code for:
Mandibular hypoplasia
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Diseases of the musculoskeletal system and connective tissue
    (M00–M99)
    • Dentofacial anomalies [including malocclusion] and other disorders of jaw
      (M26-M27)
      • Dentofacial anomalies [including malocclusion]
        (M26)

M26.04 is a billable diagnosis code used to specify a medical diagnosis of mandibular hypoplasia. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Bilateral condylar hypoplasia of mandible
  • Bilateral coronoid hypoplasia of mandible
  • Congenital abnormal shape of clavicle
  • Congenital abnormal shape of clavicle
  • Congenital anomaly of subcutaneous tissue
  • Congenital anomaly of subcutaneous tissue
  • Congenital atresia of external auditory canal
  • Congenital deformity of clavicle
  • Congenital deformity of clavicle
  • Congenital deformity of shoulder
  • Congenital deformity of shoulder
  • Congenital horizontal mandibular hypoplasia
  • Congenital transverse mandibular hypoplasia
  • Congenital vertical mandibular hypoplasia
  • Hypoplasia of left condyloid process of mandible
  • Hypoplasia of left coronoid process of mandible
  • Hypoplasia of mandibular bone
  • Hypoplasia of mandibular condyle
  • Hypoplasia of right condyloid process of mandible
  • Hypoplasia of right coronoid process of mandible
  • Mandibular hypoplasia, deafness, progeroid syndrome
  • Mandibuloacral dysostosis
  • Mandibuloacral dysostosis
  • Mandibuloacral dysplasia with type A lipodystrophy
  • Mandibuloacral dysplasia with type B lipodystrophy
  • Short stature, auditory canal atresia, mandibular hypoplasia, skeletal anomalies syndrome

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
Any dental condition including traumatic injuryDEN001N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Disorders of jawMUS029Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Disorders of teeth and gingivaDIG002N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Nontraumatic dental conditionsDEN002N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert M26.04 to ICD-9-CM

  • ICD-9-CM Code: 524.04 - Mandibular hypoplasia

Patient Education


Jaw Injuries and Disorders

Your jaw is a set of bones that holds your teeth. It consists of two main parts. The upper part is the maxilla. It doesn't move. The moveable lower part is called the mandible. You move it when you talk or chew. The two halves of the mandible meet at your chin. The joint where the mandible meets your skull is the temporomandibular joint.

Jaw problems include:

  • Fractures (broken bones)
  • Dislocations
  • Temporomandibular joint dysfunction
  • Osteonecrosis, which happens when your bones lose their blood supply
  • Cancers

Treatment of jaw problems depends on the cause.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.