Blister (nonthermal) of right upper arm, subs encntr

This code signifies a non-thermal blister located on the patient's right upper arm. It indicates that the patient is receiving active treatment for the blister, or is in the healing phase following initial treatment. The blister's etiology is not related to burns or frostbite.

Apply this code when documenting a patient visit for ongoing care of a blister on the right upper arm that was not caused by heat or cold. This includes follow-up appointments for wound care, dressing changes, or monitoring the healing process after the initial presentation. It is appropriate for encounters after the initial diagnosis and treatment have begun.

• Ensure the documentation specifies "right upper arm" and confirms a non-thermal cause.
• Verify that the encounter is for subsequent care, not the initial presentation, due to the "D" seventh character.
• Distinguish from other blister types (e.g., thermal, contact dermatitis) and ensure the correct body site.