Underdosing of opium, sequela

This code indicates a long-term consequence or complication arising from the insufficient administration or cessation of opium. It signifies that a patient is experiencing residual effects directly attributable to a past underdosing event, rather than an acute underdosing.

Use this code when documenting conditions or symptoms that are a direct result of a previous underdosing of opium, and these effects are no longer acute but rather chronic or lingering. This would apply, for example, to chronic pain or withdrawal-related psychological issues that persist long after the underdosing occurred.

• Requires a seventh character 'S' to denote sequela, indicating a late effect.
• Always sequence this code after the code(s) for the specific sequela being treated.
• Do not use for acute underdosing events; those require different seventh characters.