Adverse effect of inhaled anesthetics, sequela

This code signifies a lasting or residual condition resulting from a past adverse reaction to an inhaled anesthetic. It indicates that the patient experienced a negative effect from the anesthetic, and a consequence of that event is still present and being treated or evaluated. This is not for acute adverse effects but for the long-term sequelae.

Use this code when documenting a chronic or persistent health problem directly attributable to a previous adverse reaction to an inhaled anesthetic. Examples include ongoing neurological deficits, organ damage, or other lasting complications that developed after the initial adverse event. This code is appropriate when the initial adverse effect has resolved, but its long-term impact remains.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., specific neurological disorder, organ failure).
• Ensure documentation clearly links the current condition to a past adverse effect of an inhaled anesthetic.
• Verify that the "S" seventh character is appropriate, indicating a sequela, rather than an initial encounter (A) or subsequent encounter (D).