California Cancer Reporting System Standards, Volume III

ICD-O-3 Conversion Flag

IDENTIFIERS

DESCRIPTION

Flag to indicate how the conversion was done from ICD-O-2 to ICD-O-3.

LEVELS

Tumors, Admissions

LENGTH

1

ALLOWABLE VALUES

er225 ICDO3 Conv Flag (Eureka)

SOURCE

If Date of Diagnosis < 20010101 or = blank and Histologic Type ICD-O-3 < 8000 or > 9999 or Behavior Code ICD-O-3 is not 0-3,

Then perform the procedure described in Appendix 29 - Histology ICDO-3 Conversion Specifications and load the resulting ICD-O-3 Conversion Flag value.

Otherwise, just load the transmitted value with no conversion.

UPDATE

Tumor Level

New Case Consolidation

If the admission’s ICD-O-3 Conversion Flag code is not the same as the tumor’s ICD-O-3 Conversion Flag code, Then List for Review

Manual Change to Histology (92-00) ICD-O-2 or Behavior (92-00) ICD-O-2

If all of the following conditions are true:

Date of Diagnosis year is earlier* than  2001

Histology (92-00) ICD-O-2 or Behavior (92-00) ICD-O-2 were changed

Then perform the procedure described in Appendix 29 - Histologic Type ICD-O-3 Conversion Specifications and auto-update with the resulting ICD-O-3 Conversion Flag value.

Manual Change to Histologic Type ICD-O-3 or Behavior Code ICD-O-3

If Date of Diagnosis year is earlier* than 2001

Then perform the procedure described in Appendix 29 - Histologic Type ICD-O-3 Conversion Specifications in memory only (don’t apply converted values) to determine the proper converted Histologic Type ICD-O-3 and Behavior Code ICD-O-3

If the manually changed values match the proper converted values

Then automatically update ICD-O-3 Conversion Flag to 1

Otherwise, automatically update ICD-O-3 Conversion Flag to 3

If Date of Diagnosis year is 2001 or later** than 2001

Then automatically update ICD-O-3 Conversion Flag to 0.

Manual Change

Admission Level

Manual Change to Histology (92-00) ICD-O-2 or Behavior (92-00) ICD-O-2

Same as requirement for Tumor Level

Manual Change to Histologic Type ICD-O-3 or Behavior Code ICD-O-3

Same as requirement for Tumor Level

Manual Change

* With year, month, and/or day potentially blank, a date with a partial but later date could appear to be earlier because it is a smaller number than a full earlier date.  Thus, to test for the earliest among known (partial or full) dates, use these tests in this order:

1. 1. • If one of the known dates’ years is earlier than (less than) the other known date’s year or if it is the only known year/date, then that date is the earliest known date
      • If multiple known dates have the same earliest year, but only one of them has an earliest known month, then that is the earliest known date  
      • If multiple known dates have the same earliest year & month, but only one of them has an earliest known day, then that is the earliest known date

** With year, month, and/or day potentially blank, a completely known date could appear to be later because it is a larger number than a partial later date.  Thus, to test for the latest date among known full or partial dates, use these tests in this order:

1. 1. • If one of the known dates’ years is later than (greater than) the other date’s year being compared or if it is the only known year/date, then that date is the latest known date
      • If multiple known dates have the same latest year, but only one of them has a latest known month, then that is the latest known date
      • If multiple known dates have the same latest year & month, but only one of them has a latest known day, then that is the latest known date

CONSOLIDATED DATA EXTRACT

Yes

INTERFIELD EDITS

None

HISTORICAL CHANGES