Alphabetic Index FY2027

M26.29

Other anomalies of dental arch relationship

FY2027Chapter 13: Diseases of the musculoskeletal system and connective tissue/M26–M27 Dentofacial anomalies [including malocclusion] and other disorders of jaw

BillableComplete code, valid to report

M26.29 (also written M2629) is a billable ICD-10-CM diagnosis code for other anomalies of dental arch relationship. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 78 codes in category M26 (Dentofacial anomalies [including malocclusion]). The Alphabetic Index lists it under 11 entries. Its coding notes include 2 Excludes1 entries and 10 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (2 notes)
Inherited from M26–M27 Dentofacial anomalies [including malocclusion] and other disorders of jaw
  • hemifacial atrophy or hypertrophy (Q67.4)
  • unilateral condylar hyperplasia or hypoplasia (M27.8)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • 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)

Inclusion terms

Conditions classified to this code.

This code
  • Midline deviation of dental arch
  • Overbite (excessive) deep
  • Overbite (excessive) horizontal
  • Overbite (excessive) vertical
  • Posterior lingual occlusion of mandibular teeth

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Alphabetic Index terms

Terms the official Alphabetic Index lists for this code. 11 entries