Home > 2015 ICD-9-CM Diagnosis Codes > Diseases Of The Nervous System And Sense Organs 320-389 > Hereditary And Degenerative Diseases Of The Central Nervous System 330-337 > Disorders of the autonomic nervous system 337-
Specific code 2015 ICD-9-CM Diagnosis Code 337.21
Reflex sympathetic dystrophy of the upper limb
  • 2015
  • Billable Thru Sept 30/2015
  • Non-Billable On/After Oct 1/2015

  • ICD-9-CM 337.21 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 337.21 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: 337.21 converts approximately to:
  • 2015/16 ICD-10-CM G90.519 Complex regional pain syndrome I of unspecified upper limb
Approximate Synonyms
  • Algodystrophy of hand (disorder)
  • Complex regional pain syndrome (CRPS) Type 1
  • Complex regional pain syndrome (CRPS) Type 1, L arm
  • Complex regional pain syndrome (CRPS) Type 1, R arm
  • Complex regional pain syndrome type 1 of bilateral arms
  • Complex regional pain syndrome type 1 of left arm
  • Complex regional pain syndrome type 1 of right arm
  • Complex regional pain syndrome Type 1, bilat arms
  • Complex regional pain syndrome Type 1, hand
  • Complex regional pain syndrome Type 1, L arm
  • Complex regional pain syndrome Type 1, left arm
  • Complex regional pain syndrome Type 1, R arm
  • Complex regional pain syndrome Type 1, right arm
  • Reflex sympathetic dystrophy (RSD), hand
Clinical Information
  • A rare neurologic syndrome characterized by burning pain, tenderness, swelling, and changes in the skin color and temperature of a body part or extremity. It is usually caused by injury or surgery
  • A syndrome characterized by severe burning pain in an extremity accompanied by sudomotor, vasomotor, and trophic changes in bone without an associated specific nerve injury. This condition is most often precipitated by trauma to soft tissue or nerve complexes. The skin over the affected region is usually erythematous and demonstrates hypersensitivity to tactile stimuli and erythema. (Adams et al., Principles of Neurology, 6th ed, p1360; pain 1995 oct;63(1):127-33)
Applies To
  • Complex regional pain syndrome type I of the upper limb
ICD-9-CM Volume 2 Index entries containing back-references to 337.21:
 337.20 ICD9Data.com 337.22 
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 337.21 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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