Toxic effect of chewing tobacco, undetermined, sequela

This code signifies a long-term or late-occurring health problem resulting from a past exposure to the toxic effects of chewing tobacco, where the intent of the exposure is unknown. This could include chronic oral lesions, dental issues, or other systemic effects that manifest after the initial acute phase of exposure.

Apply this code when documenting conditions like chronic leukoplakia, oral cancer, or severe periodontal disease directly attributed to chewing tobacco use, where the patient's intent (e.g., accidental, intentional self-harm) cannot be determined. This code is appropriate for follow-up encounters addressing these persistent health issues.

• Only use this 7th character for conditions that are residual effects of a past chewing tobacco exposure.
• Ensure documentation clearly links the current condition to a prior chewing tobacco exposure.
• Do not use for acute toxic effects or ongoing chewing tobacco use; those require different codes.