M26.4
BillableMalocclusion, unspecified
Malocclusion, unspecified
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •arthropathic psoriasisL40.5
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •compartment syndrome (traumatic)A-)T79
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Related Codes(9)
M26.0Major anomalies of jaw size
M26.1Anomalies of jaw-cranial base relationship
M26.2Anomalies of dental arch relationship
M26.3Anomalies of tooth position of fully erupted tooth or teeth
M26.5Dentofacial functional abnormalities
M26.6Temporomandibular joint disorders
M26.7Dental alveolar anomalies
M26.8Other dentofacial anomalies
M26.9Dentofacial anomaly, unspecified
Also Known As / Clinical Terms(112)
SNOMED CT
- Open bite35580009
- Malocclusion47944004
- Malocclusion of teeth47944004
- Class II buccal segment relationship49827005
- Disto-occlusion49827005
- Disto-occlusion of teeth49827005
- Distoclusion of teeth49827005
- Posterior occlusion49827005
- Posteroclusion49827005
- Retrusive occlusion49827005
- Protruding tooth109507003
- Protrusion of tooth109507003
- Malocclusion due to object habits109633000
- Malocclusion due to intraoral soft tissue chewing109634006
- Malocclusion due to gingival hyperplasia109635007
- Malocclusion due to abnormal fraenum attachment109637004
- Malocclusion due to abnormal frenum attachment109637004
- Overeruption of tooth109644008
- Supraclusion of tooth109644008
- Supraocclusion of tooth109644008
- Supereruption of tooth associated with malocclusion109646005
- Occlusal trauma109647001
- Secondary occlusal trauma109649003
- Localised secondary occlusal trauma109650003
- Localized secondary occlusal trauma109650003
- Malocclusion due to lip habit196427000
- Injury of periodontal tissue263274008
- Hyperplasia of gingiva441798003
- Hyperplastic gingiva441798003
- Hyperocclusion699423008
- Premature tooth contact upon closure699423008
- Moderately compromised dentate occlusal scheme709986007
- Moderately compromised occlusal scheme709987003
- Moderately compromised partially dentate occlusal scheme709988008
- Severely compromised dentate occlusal scheme709989000
- Severely compromised occlusal scheme709991008
- Severely compromised partially dentate occlusal scheme709992001
- Substantially compromised dentate occlusal scheme709993006
- Substantially compromised occlusal scheme709994000
- Substantially compromised partially dentate occlusal scheme709995004
- Dental fremitus1351264005
- Minimally compromised occlusal scheme5671000124104
- Skeletal malocclusion4661000119109
UMLS
- Bad biteC0024636
- Dental malocclusionC0024636
- Incorrect relation between upper and lower dental archesC0024636
- Malalignment of upper and lower dental archesC0024636
- MalocclusionC0024636
- Malocclusion (morphologic abnormality)C0024636
- Malocclusion NOSC0024636
- Malocclusion of teethC0024636
- Malocclusion of teeth (disorder)C0024636
- Malocclusion, unspecifiedC0024636
- MalocclusionsC0024636
- Misalignment of upper and lower dental archesC0024636
- Occlusion anomalyC0024636
- dental malocclusionC0024636
- malocclusionC0024636
- malocclusion of teethC0024636
- malocclusionsC0024636
Clinical Terms
- Class II buccal segment relationship
- Malocclusion due to intraoral soft tissue chewing
- Protruding tooth
- Premature tooth contact upon closure
- Severely compromised dentate occlusal scheme
- Malocclusion due to gingival hyperplasia
- Substantially compromised occlusal scheme
- Bad bite
- Substantially compromised partially dentate occlusal scheme
- Disto-occlusion
- Moderately compromised partially dentate occlusal scheme
- Malocclusion due to lip habit
- Malocclusion NOS
- Localized secondary occlusal trauma
- Malocclusion due to object habits
- Posterior occlusion
- malocclusions
- Supraocclusion of tooth
- Hyperocclusion
- Supereruption of tooth associated with malocclusion
- Moderately compromised dentate occlusal scheme
- Moderately compromised occlusal scheme
- Incorrect relation between upper and lower dental arches
- Malalignment of upper and lower dental arches
- Dental malocclusion
- Injury of periodontal tissue
- Protrusion of tooth
- Misalignment of upper and lower dental arches
- Overeruption of tooth
- Occlusion anomaly
- Secondary occlusal trauma
- Substantially compromised dentate occlusal scheme
- Malocclusion (morphologic abnormality)
- Supraclusion of tooth
- Posteroclusion
- Retrusive occlusion
- Severely compromised occlusal scheme
- Malocclusion due to abnormal fraenum attachment
- malocclusion of teeth
- Distoclusion of teeth
- Open bite
- Occlusal trauma
- Malocclusion of teeth (disorder)
- Disto-occlusion of teeth
- Localised secondary occlusal trauma
- Skeletal malocclusion
- Hyperplastic gingiva
- Dental fremitus
- Hyperplasia of gingiva
- Severely compromised partially dentate occlusal scheme
- Malocclusion due to abnormal frenum attachment
- Minimally compromised occlusal scheme
Frequently Asked Questions
What is the ICD-10 code for malocclusion, unspecified?
The ICD-10-CM code for malocclusion, unspecified is M26.4. The full clinical description is "Malocclusion, unspecified". M26.4 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code M26.4 mean?
ICD-10-CM code M26.4 represents “Malocclusion, unspecified”. It is classified under Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue and is a billable/specific code that can be used on a claim.
Is M26.4 a billable code?
Yes, M26.4 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is M26.4 in?
M26.4 is in Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (codes M00-M99).
What codes cannot be used with M26.4?
M26.4 has Excludes1 notes indicating codes that cannot be used together with it, including: hemifacial atrophy or hypertrophy (Q67.4); unilateral condylar hyperplasia or hypoplasia (M27.8).
What SNOMED CT codes does M26.4 map to?
M26.4 maps to 29 SNOMED CT concepts: 49827005, 1351264005, 699423008, 441798003, 263274008, and 24 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for M26.4?
M26.4 is linked to 1 UMLS Concept Unique Identifier: C0024636. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does M26.4 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like malocclusion, unspecified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of M26.4?
There is no direct ICD-11 mapping available for M26.4 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.