Corrosions of unspecified internal organs, sequela

This code signifies the long-term effects or complications arising from a past corrosive injury to an internal organ, where the specific organ affected is not documented. It indicates that the acute phase of the injury has passed, and the patient is now experiencing residual issues.

Apply this code when documentation clearly states a sequela (e.g., stricture, adhesion, chronic pain) resulting from a previous corrosive burn to an internal organ, but the medical record does not specify which internal organ was involved. This is appropriate for follow-up encounters addressing these chronic complications.

• Always attempt to query for a more specific internal organ if possible, as this is an unspecified code.
• Do not use for acute corrosive injuries; those require codes from the T20-T28 range without the "S" seventh character.
• Requires an additional code to describe the specific nature of the sequela (e.g., K22.2 for esophageal obstruction).