International Neuroblastoma Pathology Classification (INPC)

Shimada Classification, Unfavorable histology or Favorable histology

Notes

**Note 1:** This SSDI is effective for diagnosis years 2023+ * For cases diagnosed 2018-2022, leave this SSDI blank **Note 2:** Physician statement of unfavorable vs favorable histology can be used to code this data item when no other information is available. **Note 3:** The International Neuroblastoma Pathology Prognostic Classification (INPC) (unfavorable versus favorable histology) is a biologically relevant classification based on morphologic features of neuroblastic tumors which has prognostic indications. It is based on the following criteria. * Age * Neuroblastic maturation * Schwannian stromal content * Mitosis-kayorrhexis index (MKI) * Degree of differentiation (grade)

NAACCR Item

NAACCR #9610

Metadata

SSDI
Code Description
0 Unfavorable
1 Favorable
7 Test ordered, results not in chart
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 Cannot be determined by pathologist International Neuroblastoma Pathology Prognostic Classification (INPC) not assessed or unknown if assessed
<BLANK> N/A - Diagnosis year is prior to 2023
(1) American Society of Clinical Oncology © 2009, The International Neuroblastoma Risk Group (INRG) Classification System: AN INRG Task Force Report; published by American Society of Clinical Oncology, 2009