Blister (nonthermal) of nose, sequela

This code describes a non-thermal blister located on the nose, indicating a residual effect or complication from an initial injury or condition. It signifies that the primary cause of the blister has resolved, but the blister itself remains as a lasting consequence.

Use this code when documentation clearly indicates a non-thermal blister on the nose that is a sequela of a previous injury or condition. This applies to situations where the original acute phase has passed, and the blister is a chronic or persistent finding. Documentation should specify "sequela" or describe the blister as a long-term effect.

• Ensure the blister is explicitly documented as non-thermal and located on the nose.
• Verify that the documentation supports the "sequela" designation, indicating a residual condition.
• Do not use for acute blisters; a different code for the acute phase would be appropriate.