AHA Coding Clinic® for ICD-9 - 1993 Fourth Quarter; New/Revised Codes

Reflex Sympathetic Dystrophy and Causalgia

A new code has been created for Reflex Sympathetic Dystrophy (RSD) and an expansion of codes for causalgia has also been carried out to differentiate between mononeuritis of the upper and lower limb. RSD has sixteen classic symptoms and is not synonymous with either psychogenic pain or causalgia. A patient must have at least five of the symptoms, plus hyperalgesia, to confirm the diagnosis of RSD. Reflex Sympathetic Dystrophy usually occurs in the limbs, but it may also occur in the face or trunk. In contrast, causalgia has five classic symptoms, three of which must be present for diagnosis...

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