Toxic effect of chloroform, undetermined, sequela

This code signifies a long-term health problem or residual effect resulting from an exposure to chloroform, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) is not known or cannot be determined. It indicates that the acute phase of the toxic effect has passed, and the patient is now experiencing a chronic or permanent consequence.

Apply this code when documenting a sequela, such as chronic organ damage, neurological deficits, or persistent skin conditions, that are directly attributable to a past chloroform exposure. This is appropriate when the medical record clearly links the current condition to a previous toxic event, but the circumstances surrounding that event remain unclear.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic hepatitis, peripheral neuropathy).
• Ensure documentation explicitly states the link between the current condition and a prior chloroform exposure.
• Only use the "S" (sequela) seventh character when the residual effect is being treated, not the acute poisoning itself.