C83.9A

HCC Category Mapping

What This Code Means

This code describes a type of blood cancer called non-follicular lymphoma where the specific subtype cannot be determined, and the patient is currently in remission (cancer is not actively growing or spreading). Remission means the cancer is under control, though the patient may still require monitoring and treatment.

Coding Tips

• •The '5th character A' indicates remission status—ensure documentation clearly states the patient is in remission before assigning this code; use a different 5th character (0, 1, or B) if remission status is not documented
• •This is an unspecified code (9th character); attempt to obtain more specific lymphoma subtype information from pathology reports or oncology notes before defaulting to 'unspecified'

Clinical Significance

Non-follicular (diffuse) lymphoma, unspecified type, in remission indicates that the patient's unspecified non-follicular lymphoma has responded to treatment and is no longer actively detectable. This code is used when remission status is confirmed but the original subtype was not specified or is unknown. It captures the ongoing surveillance needs and potential for relapse that characterize lymphoma survivors.

Documentation Requirements

• ✓Explicit provider documentation of remission status
• ✓Supporting evidence (negative imaging, normal labs, or pathology)
• ✓History of non-follicular lymphoma diagnosis
• ✓Ongoing surveillance plan
• ✓Date of remission and interval since last treatment

Commonly Confused Codes