Blister of finger(s), without mention of infection

This code represents a localized collection of fluid, typically serous, within or beneath the epidermis of one or more fingers, resulting from friction, burns, or other trauma. It specifically indicates that there is no documented evidence of secondary bacterial infection at the time of encounter.

This code is appropriate for documenting a simple blister on the finger(s) when the medical record explicitly states the absence of infection. It is commonly used for minor injuries such as those caused by repetitive gripping, pinching, or mild thermal exposure. Documentation should clearly describe the blister's location and confirm no signs of purulence, erythema, or warmth beyond the immediate trauma.

• Do not use this code if the documentation indicates any signs of infection (e.g., pus, spreading cellulitis); instead, consider codes from the 681 series.
• If the blister is due to a burn, prioritize the burn code (e.g., 944.x) and use this code as a secondary diagnosis if the blister is a distinct, non-burn-related finding.
• Ensure the medical record specifies "finger(s)" and explicitly states "without mention of infection" or similar phrasing to support this code.