Blister (nonthermal), unspecified foot, sequela

This code signifies a long-term or late effect of a non-heat related blister on an unspecified foot. It indicates that the initial blister has resolved, but there are persistent issues or complications directly attributable to that past injury. This could include scarring, chronic pain, or functional impairment.

Use this code when documenting a patient presenting with a condition that is a direct consequence of a previously sustained, non-thermal blister on their foot, and the specific foot (right or left) is not documented. This applies when the original blister is no longer active but has left a lasting impact. Examples include a patient with chronic nerve pain at the site of a healed blister or significant scarring causing discomfort.

• Ensure documentation clearly links the current condition to a past non-thermal foot blister.
• Only use this code when the specific foot (right or left) is not specified in the medical record.
• Remember the "S" seventh character indicates a sequela, meaning the initial injury has healed but its effects persist.