Adverse effect of other viral vaccines, sequela

This code indicates a long-term or residual condition resulting from a past adverse reaction to a viral vaccine other than those specifically classified elsewhere. This means the patient experienced a negative side effect from a viral vaccine, and that side effect has now led to a lasting health problem.

Apply this code when documenting a chronic or permanent health issue that is directly attributable to an adverse event from a viral vaccine. This would include conditions like persistent neurological deficits, chronic pain syndromes, or organ damage that developed as a consequence of the vaccine reaction and are still present.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past adverse effect of a viral vaccine.
• Do not use this code for acute adverse reactions; it is specifically for the lasting effects.