Corrosion of unspecified degree of neck, sequela

This code indicates a long-term complication or residual effect resulting from a corrosive burn to the neck. It signifies that the acute phase of the injury has passed, and the patient is now experiencing a persistent issue directly attributable to the original corrosion, without specifying the initial severity of the burn.

Use this code when documenting conditions such as chronic scarring, contractures, or nerve damage in the neck region that are directly linked to a past corrosive injury. This applies when the patient is being treated for these lasting effects, rather than the initial acute burn.

• Ensure documentation clearly links the current neck condition to a previous corrosive burn.
• The "S" in the 7th character indicates sequela, meaning the residual effect of a past injury.
• Do not use this code for acute corrosive burns; instead, use the appropriate T20.0-T20.3 codes for initial encounters.