Date Initial RX SEER [1260]
Date Therapy Initiated
Organization | Field Name | ID | Required |
|---|---|---|---|
KCR | Date Initial RX SEER [1260] (NADateInitialRxSEER) | 60270 | No |
NAACCR | Date Initial RX SEER | No |
Field Length: 8
Record the start date of the first course of therapy. This is the start date of any type of treatment for this tumor; surgery, chemotherapy, radiation therapy, or other types of therapy. Treatment may be given in a hospital or non-hospital setting.
Date Therapy Initiated must be transmitted in the YYYYMMDD format. Date Therapy Initiated may be recorded in the transmission format, or recorded in the traditional format (MMDDYYYY) and converted electronically to the transmission format.
Transmitting Dates
Transmit date data items in the year, month, day format (YYYYMMDD). Leave the year, month and/or day blank when they cannot be estimated or are unknown.
Common Formats
YYYYMMDD Complete date is known
YYYYMM Year and month are known/estimated; day is unknown
YYYY Year is known/estimated; month and day cannot be estimated or are unknown
Blank Year, month, and day cannot be estimated or are unknown
Transmit Instructions
1. Transmit date data items in the year, month, day format (YYYYMMDD)
2. Leave the year, month and/or day blank when they cannot be estimated or are unknown
a. Leave the year, month and day blank for death certificate only (DCO) cases when the date of therapy is unknown and cannot be estimated
3. Most SEER registries collect the month, day, and year for date therapy initiated. When the full date (YYYYMMDD) is transmitted, the seventh and eighth digits (day) will be deleted when the data are received by SEER.
Codes for Year
Code the four-digit year of date therapy initiated
Codes for Month
Code | Description |
|---|---|
01 | January |
02 | February |
03 | March |
04 | April |
05 | May |
06 | June |
07 | July |
08 | August |
09 | September |
10 | October |
11 | November |
12 | December |
Codes for Day
Days of the Month |
|---|
01 |
02 |
03 |
... |
... |
31 |
Coding Instructions
1. Code the start date of the first therapy. The first therapy may be recorded in the following data items
• Surgery of Primary Site 2023
• Scope of Regional Lymph Node Surgery (excluding code 1)
• Surgical Procedure of Other Site
• Radiation Treatment Modality--Phase I, II, III
• Chemotherapy
• Hormone Therapy
• Immunotherapy
• Hematologic Transplant and Endocrine Procedures
• Other Therapy
2. Record the date the decision was made for active surveillance even if the patient later changes their mind and opts for additional treatment. Code Treatment Status as 2, Active surveillance/watchful waiting.
3. Code the date of excisional biopsy as the date therapy initiated when it is the first treatment. Code the date of a biopsy documented as incisional when further surgery reveals no residual or only microscopic residual.
Example: Breast biopsy with diagnosis of infiltrating duct carcinoma; subsequent re-excision with no residual tumor noted. Code the date of the biopsy as the date therapy initiated.
4. Record the actual date of treatment when treatment is performed prior to birth. Record the type of treatment in the appropriate data item, for example, Surgery of Primary Site 2023.
Example: On 01/03/2024, fetus is diagnosed with malignant teratoma. The teratoma is resected in utero on 01/10/2024. Live birth on 04/18/2024. Code the date therapy initiated as January 10, 2024 (20240110).
5. Code the date unproven therapy was initiated as the date therapy initiated
6. Code the date of admission to the hospital for inpatient or outpatient treatment when the exact date of the first treatment is unknown
7. Leave blank
a. When no treatment is given during the first course
Note: This includes when a patient dies before treatment is recommended or given.
b. When it is known the patient had first course therapy, but it is impossible to estimate the date
c. When it is unknown whether the patient had treatment
d. For death certificate only (DCO) cases when the date is unknown and cannot be estimated
e. Autopsy only cases
Estimating Dates
Estimating the month
1. Code “spring of” to April
2. Code “summer” or “middle of the year” to July
3. Code “fall” or “autumn” as October
4. For “winter of,” try to determine whether the physician means the first of the year or the end of the year and code January or December as appropriate. If no determination can be made, use whatever information is available to calculate the month.
5. Code “early in year” to January
6. Code “late in year” to December
7. Use whatever information is available to calculate the month
8. Code the month of admission when there is no basis for estimation
9. Leave month blank if there is no basis for approximation
Estimating the year
1. Code “a couple of years” to two years earlier
2. Code “a few years” to three years earlier
3. Use whatever information is available to calculate the year
4. Code the year of admission when there is no basis for estimation