M26.0 – Major anomalies of jaw size
ICD-10-CM 2027 diagnosis code · Dentofacial anomalies [including malocclusion] and other disorders of jaw
- Code
M26.0(claims format:M260)- Description
- Major anomalies of jaw size
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M26-M27 Dentofacial anomalies [including malocclusion] and other disorders of jaw
- Parent codes
- M26
Billable codes under M26.0
M26.0 is a header code and cannot be used on claims. Choose the most specific code:
- M26.00 – Unspecified anomaly of jaw sizeBillable
- M26.01 – Maxillary hyperplasiaBillable
- M26.02 – Maxillary hypoplasiaBillable
- M26.03 – Mandibular hyperplasiaBillable
- M26.04 – Mandibular hypoplasiaBillable
- M26.05 – MacrogeniaBillable
- M26.06 – MicrogeniaBillable
- M26.07 – Excessive tuberosity of jawBillable
- M26.09 – Other specified anomalies of jaw sizeBillable
Notes for M26.0
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block M26-M27
Related codes in M26
- M26.1 – Anomalies of jaw-cranial base relationshipHeader
- M26.2 – Anomalies of dental arch relationshipHeader
- M26.3 – Anomalies of tooth position of fully erupted tooth or teethHeader
- M26.4 – Malocclusion, unspecifiedBillable
- M26.5 – Dentofacial functional abnormalitiesHeader
- M26.6 – Temporomandibular joint disordersHeader
- M26.7 – Dental alveolar anomaliesHeader
- M26.8 – Other dentofacial anomaliesHeader
- M26.9 – Dentofacial anomaly, unspecifiedBillable
Frequently asked questions
What is ICD-10 code M26.0?
M26.0 is the ICD-10-CM code for major anomalies of jaw size, in the block M26-M27 (Dentofacial anomalies [including malocclusion] and other disorders of jaw).
Is M26.0 a billable code?
No. M26.0 is a header code with more specific child codes; report one of the billable codes listed above.
What category does M26.0 belong to?
It belongs to category M26 – Dentofacial anomalies [including malocclusion].
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.