Class of Case divides cases into two groups. Analytic cases (codes 00-22) are those that are required by CoC to be abstracted because of the program’s primary responsibility in managing the cancer. Analytic cases are grouped according to the location of diagnosis and treatment. Treatment and outcome reports may be limited to analytic cases. Nonanalytic cases (codes 30-49 and 99) may be abstracted by the facility to meet central registry requirements or because of a request by the facility’s cancer program. Nonanalytic cases are grouped according to the reason a patient who received care at the facility is nonanalytic, or the reason a patient who never received care at the facility may have been abstracted.

Class of Case can be used in conjunction with Type of Reporting Source [500]. Type of Reporting Source is designed to document the source of documents used to abstract the cancer being reported.

Class of Case reflects the facility's role in managing the cancer, whether the cancer is required to be reported by CoC, and whether the case was diagnosed after the program's Reference Date.

Note: This expanded list of coded values is effective with Version 12. *Indicates Class of Case codes appropriate for abstracting cases from non-hospital sources such as physician offices, ambulatory surgery centers, freestanding pathology laboratories, radiation therapy centers. When applied to these types of facilities, the non-hospital source is the reporting facility. The codes are applied the same way as if the case were reported from a hospital. By using Class of Case codes in this manner for non-hospital sources, the central cancer registry is able to retain information reflecting the facility’s role in managing the cancer consistent with the way it is reported from hospitals. Using Class of Case in conjunction with Type of Reporting Source [500] which identifies the source documents used to abstract the cancer being reported, the central cancer registry has two distinct types of information to use in making consolidation decisions

INITIAL DIAGNOSIS AT REPORTING FACILITY
00*	Initial diagnosis at the reporting facility AND all treatment or a decision not to treat was done ELSEWHERE
10*	Initial diagnosis at the reporting facility or in a staff physician's office AND PART OR ALL of first course treatment or a decision not to treat was at the reporting facility, NOS
11	Initial diagnosis in staff physician's office AND PART of first course treatment was done at the reporting facility
12	Initial diagnosis in staff physician's office AND ALL first course treatment or a decision not to treat was done at the reporting facility
13*	Initial diagnosis at the reporting facility AND PART of first course treatment was done at the reporting facility
14*	Initial diagnosis at the reporting facility AND ALL first course treatment or a decision not to treat was done at the reporting facility
INITIAL DIAGNOSIS ELSEWHERE, FACILITY INVOLVED IN FIRST COURSE TREATMENT
20*	Initial diagnosis elsewhere AND PART OR ALL of first course treatment was done at the reporting facility, NOS
21*	Initial diagnosis elsewhere AND PART of treatment was done at the reporting facility
22*	Initial diagnosis elsewhere AND ALL first course treatment was done at the reporting facility
Classes of Case not required by CoC to be abstracted (May be required by Cancer Committee, state or regional registry, or other entity)
PATIENT APPEARS IN PERSON AT REPORTING FACILITY; BOTH INITIAL DIAGNOSIS AND TREATMENT ELSEWHERE
30*	Initial diagnosis and all first course treatment elsewhere AND reporting facility participated in DIAGNOSTIC WORKUP (for example, consult only, staging workup after initial diagnosis elsewhere)
31*	Initial diagnosis and all first course treatment elsewhere AND reporting facility provided IN-TRANSIT care
32*	Diagnosis AND all first course treatment provided elsewhere AND patient presents at reporting facility with disease RECURRENCE OR PERSISTENCE
33*	Diagnosis AND all first course treatment provided elsewhere AND patient presents at reporting facility with disease HISTORY ONLY
34	Type of case not required by CoC to be accessioned (for example, a benign colon tumor) AND initial diagnosis AND part or all of first course treatment by reporting facility
35	Case diagnosed before program's Reference Date AND initial diagnosis AND PART OR ALL of first course treatment by reporting facility
36	Type of case not required by CoC to be accessioned (for example, a benign colon tumor) AND initial diagnosis elsewhere AND part or all of first course treatment by reporting facility
37	Case diagnosed before program's Reference Date AND initial diagnosis elsewhere AND all or part of first course treatment by reporting facility
38*	Initial diagnosis established by AUTOPSY at the reporting facility, cancer not suspected prior to death
PATIENT DOES NOT APPEAR IN PERSON AT REPORTING FACILITY
40	Diagnosis AND all first course treatment given at the same staff physician's office
41	Diagnosis and all first course treatment given in two or more different staff physician offices
42	Non-staff physician or non-CoC accredited clinic or other facility, not part of reporting facility, accessioned by reporting facility for diagnosis and/or treatment by that entity (for example, hospital abstracts cases from an independent radiation facility)
43*	PATHOLOGY or other lab specimens ONLY
49*	DEATH CERTIFICATE ONLY
UNKNOWN RELATIONSHIP TO REPORTING FACILITY
99*	Nonanalytic case of unknown relationship to facility (not for use by CoC accredited cancer programs for analytic cases.); UNKNOWN

Note: This expanded list of coded values is effective with Version 12.

*Indicates Class of Case codes appropriate for abstracting cases from non-hospital sources such as physician offices, ambulatory surgery centers, freestanding pathology laboratories, radiation therapy centers. When applied to these types of facilities, the non-hospital source is the reporting facility. The codes are applied the same way as if the case were reported from a hospital.

By using Class of Case codes in this manner for non-hospital sources, the central cancer registry is able to retain information reflecting the facility's role in managing the cancer consistent with the way it is reported from hospitals. Using Class of Case in conjunction with Type of Reporting Source [500] which identifies the source documents used to abstract the cancer being reported, the central cancer registry has two distinct types of information to use in making consolidation decisions