ICDcodes.org
FY2027

M85.5 — Aneurysmal bone cyst

Not billable

Is M85.5 billable?

No — M85.5 is a non-billable header code. M85.5 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 24 billable codes beneath M85.5.

Billable codes under this header

M85.5 at a glance

CodeM85.5
DescriptionAneurysmal bone cyst
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Excludes2 — not included here

The conditions below are not part of M85.5, but a patient may have both at the same time. When documentation supports it, M85.5 and the excluded code may both be reported.

  • aneurysmal cyst of jaw (M27.4)

Excludes1 — never code together — inherited from M85

The conditions below can never be reported together with M85.5 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

  • osteogenesis imperfecta (Q78.0)
  • osteopetrosis (Q78.2)
  • osteopoikilosis (Q78.8)
  • polyostotic fibrous dysplasia (Q78.1)

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M85.5, but a patient may have both at the same time. When documentation supports it, M85.5 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 M85.5? (10)

How long has M85.5 existed?

M85.5 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.

What other codes are in the M85 family? (8)