High Risk Histologic Features
Notes
**Note 1:** Physician statement of high risk histologic features can be used to code this data item when no other information is available. **Note 2:** High risk histologic features include * Desmoplasia * Poor differentiation (grade 3) * Sarcomatoid differentiation (features) * Undifferentiated (grade 4) **Note 3:** Code the presence or absence of high risk histologic features as documented in the pathology report. **Note 4:** Code 5 if more than one high risk histologic feature is present.| Code | Description |
|---|---|
| 0 | No high risk histologic features Non-invasive neoplasm (behavior /2) |
| 1 | Desmoplasia |
| 2 | Poor differentiation (grade 3) |
| 3 | Sarcomatoid differentiation |
| 4 | Undifferentiated (grade 4) |
| 5 | Multiple high risk histologic features |
| 6 | Histologic features, NOS (type of high risk histologic feature not specified) |
| 8 | Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code 8 may result in an edit error) |
| 9 | Not documented in medical record High risk histologic features not assessed or unknown if assessed |