ICDcodes.org
FY2027

M26.5 — Dentofacial functional abnormalities

Not billable

Is M26.5 billable?

No — M26.5 is a non-billable header code. M26.5 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath M26.5.

M26.5 at a glance

CodeM26.5
DescriptionDentofacial functional abnormalities
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Excludes1 — never code together

The conditions below can never be reported together with M26.5 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

Excludes1 — never code together — inherited from M26-M27

The conditions below can never be reported together with M26.5 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

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

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M26.5, but a patient may have both at the same time. When documentation supports it, M26.5 and the excluded code may both be reported.

  • 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)

What codes fall under M26.5? (9)

How long has M26.5 existed?

M26.5 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with M26.5?

ICD-10-CM declares these codes mutually exclusive with M26.5 — exactly one of each pair can be correct for a given encounter.

What other codes are in the M26 family? (9)