M85.50

Aneurysmal bone cyst, unspecified site

Billable / specific

M85.50 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Includes (from M85)

  • Note: Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Excludes1

Not coded here — never report together with this code.

Excludes2

Not included here — may be reported together when both conditions exist.

  • aneurysmal cyst of jaw (M27.4) (from M85.5)
  • arthropathic psoriasis (L40.5-) (from M85)
  • certain conditions originating in the perinatal period (P04-P96) (from M85)
  • certain infectious and parasitic diseases (A00-B99) (from M85)
  • compartment syndrome (traumatic) (T79.A-) (from M85)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from M85)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from M85)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from M85)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from M85)
  • neoplasms (C00-D49) (from M85)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from M85)

Also known as

  • Cyst, boneNEC, aneurysmal

Parent code

  • M85.5Aneurysmal bone cystHeader

Related codes

  • M85.51Aneurysmal bone cyst, shoulderHeader
  • M85.52Aneurysmal bone cyst, upper armHeader
  • M85.53Aneurysmal bone cyst, forearmHeader
  • M85.54Aneurysmal bone cyst, handHeader
  • M85.55Aneurysmal bone cyst, thighHeader
  • M85.56Aneurysmal bone cyst, lower legHeader
  • M85.57Aneurysmal bone cyst, ankle and footHeader
  • M85.58Aneurysmal bone cyst, other siteBillable
  • M85.59Aneurysmal bone cyst, multiple sitesBillable

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