Toxic effect of beryllium and its compounds, undet, subs

This code signifies an adverse health effect resulting from exposure to beryllium or its compounds, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. The patient is receiving follow-up care for this toxic effect after the initial treatment phase.

Apply this code when a patient presents for ongoing management of symptoms or complications due to beryllium toxicity, and the documentation does not specify whether the exposure was accidental, intentional, or assault. This is appropriate for subsequent visits after the acute phase of treatment has concluded.

• Always sequence this code after the primary diagnosis indicating the specific manifestation of the toxic effect.
• Ensure documentation clearly supports a "subsequent encounter" for the toxic effect, not an initial presentation.
• Only use this code when the intent of exposure is explicitly documented as "undetermined" or cannot be inferred from the medical record.