Underdosing of antihyperlip and antiarterio drugs, subs

This code indicates that a patient is receiving less than the prescribed or recommended dosage of medication intended to lower cholesterol or prevent hardening of the arteries. This underdosing is occurring during a follow-up visit for the condition being treated or for complications arising from the underdosing itself.

Use this code when a patient presents for ongoing management of hyperlipidemia or arteriosclerosis, and documentation explicitly states they are taking less than the prescribed antihyperlipidemic or antiarteriosclerotic medication. This applies to situations where the underdosing is being addressed or monitored during a subsequent encounter.

• Ensure documentation clearly specifies "underdosing" and identifies the drug class as antihyperlipidemic or antiarteriosclerotic.
• The "D" seventh character signifies a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.
• Always code the condition being treated (e.g., hyperlipidemia, atherosclerosis) as the primary diagnosis, with this underdosing code as a secondary diagnosis.