Collaborative Stage for TNM 7 - Revised 11/12/2010 [ Schema ]
CS Site-Specific Factor 17
Urinary 5-Hydroxyindoleacetic Acid (5-HIAA) Lab Value
- Note 1: Carcinoid tumors can release large amounts of serotonin. 5-Hydroxyindoleacetic acid (5-HIAA) is a breakdown product of the hormone serotonin. The 5-HIAA test measures the amount of acid secreted in the urine over a 24-hour period.
- Note 2: Record to the nearest milligram (mg) the highest 5-HIAA lab value documented in the medical record prior to treatment. For example, code a pre-treatment 5-HIAA of 550 mg over 24 hours as 550.
- Note 3: Code 000 is reserved for exactly 0 mg (no measurable amount of 5-HIAA). Do not round tiny values down to 0 ng/ml; any measured value less than or equal to 1 mg should be coded 001. For code 001, also round 1.1-1.4 mg down to 1 ng/ml. For codes 002-979, round values to the nearest mg.
- Note 4: For an uncertain value, record the stated closest value. For example, code a value stated as "less than 5 mg" as 005.
|000||0 milligrams/24 hours (mg)/24hours|
|001||1 or less milligrams/24hours|
|980||980 or greater milligrams/24hours|
|988||Not applicable: Information not collected for this case|
(If this information is required by your standard setter, use of code 988 may result in an edit error.)
|997||Test ordered, results not in chart|
|998||Test not done (test was not ordered and was not performed)|
|999||Unknown or no information|
Not documented in patient record