External constriction, unsp lesser toe(s), subs encntr

This diagnosis code indicates an external constriction affecting one or more of the lesser toes (any toe other than the great toe) where the specific toe involved is not documented. The "subsequent encounter" designation means the patient is receiving follow-up care for this condition after the initial treatment phase.

Use this code for patients presenting for ongoing management, healing assessment, or complications related to an external constriction of an unspecified lesser toe. This could include follow-up appointments for a tight shoe, a ring, or other external object that caused the initial constriction. It is appropriate when the specific toe (e.g., second, third, fourth, or fifth) is not specified in the medical record.

• Ensure documentation clearly indicates that the encounter is for follow-up care, not the initial injury.
• If the specific lesser toe affected is known, a more precise code (e.g., S90.442- for second toe) should be used instead.
• Always assign an external cause code (V00-Y99) to identify the cause of the external constriction, if known and documented.