Home > 2015 ICD-9-CM Diagnosis Codes > Diseases Of The Musculoskeletal System And Connective Tissue 710-739 > Osteopathies, Chondropathies, And Acquired Musculoskeletal Deformities 730-739 > Other disorders of bone and cartilage 733-
Specific code 2015 ICD-9-CM Diagnosis Code 733.21
Solitary bone cyst
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 733.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 733.21 should only be used for claims with a date of service on or before September 30, 2015. For claims with a date of service on or after October 1, 2015, use an equivalent ICD-10-CM code (or codes).
Convert to ICD-10-CM: 733.21 converts approximately to:
  • 2015/16 ICD-10-CM M85.40 Solitary bone cyst, unspecified site
Approximate Synonyms
  • Bone cyst, solitary
  • Solitary bone cyst of ankle
  • Solitary bone cyst of fibula
  • Solitary bone cyst of foot
  • Solitary bone cyst of hand
  • Solitary bone cyst of humerus
  • Solitary bone cyst of L ankle and foot
  • Solitary bone cyst of L hand
  • Solitary bone cyst of L humerus
  • Solitary bone cyst of L pelvis
  • Solitary bone cyst of L shoulder
  • Solitary bone cyst of L tibia and fibula
  • Solitary bone cyst of L ulna and radius
  • Solitary bone cyst of left ankle
  • Solitary bone cyst of left ankle and foot
  • Solitary bone cyst of left hand
  • Solitary bone cyst of left humerus
  • Solitary bone cyst of left pelvis
  • Solitary bone cyst of left radius
  • Solitary bone cyst of left shoulder
  • Solitary bone cyst of left tibia
  • Solitary bone cyst of left tibia and fibula
  • Solitary bone cyst of left ulna and radius
  • Solitary bone cyst of pelvis
  • Solitary bone cyst of R ankle and foot
  • Solitary bone cyst of R hand
  • Solitary bone cyst of R humerus
  • Solitary bone cyst of R pelvis
  • Solitary bone cyst of R shoulder
  • Solitary bone cyst of R tibia and fibula
  • Solitary bone cyst of R ulna and radius
  • Solitary bone cyst of radius
  • Solitary bone cyst of right ankle
  • Solitary bone cyst of right ankle and foot
  • Solitary bone cyst of right hand
  • Solitary bone cyst of right humerus
  • Solitary bone cyst of right pelvis
  • Solitary bone cyst of right radius
  • Solitary bone cyst of right shoulder
  • Solitary bone cyst of right tibia
  • Solitary bone cyst of right tibia and fibula
  • Solitary bone cyst of right ulna and radius
  • Solitary bone cyst of shoulder
  • Solitary bone cyst of tibia
  • Solitary bone cyst of ulna
Clinical Information
  • Benign unilocular lytic areas in the proximal end of a long bone with well defined and narrow endosteal margins. The cysts contain fluid and the cyst walls may contain some giant cells. Bone cysts usually occur in males between the ages 3-15 years
Applies To
  • Unicameral bone cyst
ICD-9-CM Volume 2 Index entries containing back-references to 733.21:
  • Cyst (mucus) (retention) (serous) (simple)
    • solitary
  • Solitary
    • cyst
 733.20 ICD9Data.com 733.22 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 733.21 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2015 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.
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