M26.01 – Maxillary hyperplasia

ICD-10-CM 2027 diagnosis code · Dentofacial anomalies [including malocclusion] and other disorders of jaw

Billable code

ICD-10-CM code M26.01

Code: M26.01 (claims format: M2601)
Description: Maxillary hyperplasia
Billable: Yes – valid for HIPAA-covered transactions
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 › M26.0

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M26.0 – Major anomalies of jaw size

Excludes1 (not coded here):

acromegaly (E22.0)
Robin's syndrome (Q87.0)

Block M26-M27

Excludes1 (not coded here):

hemifacial atrophy or hypertrophy (Q67.4)
unilateral condylar hyperplasia or hypoplasia (M27.8)

Index terms for M26.01

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in M26.0

M26.00 – Unspecified anomaly of jaw sizeBillable
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

Frequently asked questions

What is ICD-10 code M26.01?

M26.01 is the ICD-10-CM code for maxillary hyperplasia, in the block M26-M27 (Dentofacial anomalies [including malocclusion] and other disorders of jaw).

Is M26.01 a billable code?

Yes. M26.01 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does M26.01 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.