Other nonspecific abnormal histological findings

This code signifies microscopic tissue examination results that are abnormal but lack sufficient specificity for a definitive diagnosis. It indicates findings that deviate from normal cellular or architectural patterns, but do not point to a particular disease process. These are often preliminary or inconclusive pathology reports.

Use this code when a pathology report identifies abnormal cellular changes, atypical findings, or other non-specific histological abnormalities without a more precise diagnostic term. It is appropriate when the pathologist cannot render a definitive diagnosis based on the tissue sample alone, and further investigation or clinical correlation is required.

• Always seek a more specific diagnosis if available; this code is for non-specific findings only.
• Do not use this code if a definitive benign or malignant diagnosis is provided, even if further characterization is pending.
• Consider sequencing this code as a secondary diagnosis when the primary reason for the encounter is the biopsy or the underlying condition being investigated.