Advrs effect of antiparkns drug/centr musc-tone depr, sqla

This code signifies a long-term or residual condition resulting from an adverse reaction to medications used to treat Parkinson's disease or other drugs that reduce muscle tone in the central nervous system. These sequelae are persistent effects that occur after the acute adverse event has resolved.

Apply this code when documenting a patient presenting with a chronic or permanent health problem directly attributable to a past adverse effect from antiparkinsonism agents or other central muscle-tone depressants. This is used for conditions that are no longer acute but are ongoing consequences of the prior drug reaction.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past adverse drug effect from the specified drug classes.
• Do not use for acute adverse effects; refer to the appropriate acute adverse effect code for initial encounters.