Collaborative Stage

Note 1: Chromoganins are a family of proteins in secretory granules found throughout the neuroendocrine system. Serum Chromogranin A (CgA) has been shown to be a useful marker for neuroendocrine tumors.
Note 2: Record to the nearest nanogram/milliliter (ng/ml) the highest CgA lab value documented in the medical record prior to treatment. For example, code a pretreatment CgA of 400 ng/ml as 400.
Note 3: Code 000 is reserved for exactly 0.0 ng/ml (no measurable amount of CgA). Do not round tiny values down to 0 ng/ml; any measured value less than or equal to 1 ng/ml should be coded 001. For code 001, also round 1.1-1.4 ng/ml down to 1 ng/ml. For codes 002-979, round values to the nearest ng/ml.
Note 4: For an uncertain value, record the stated closest value. For example, code a value stated as "less than 5 ng/ml" as 005.

Code	Description
000	0 nanogram/milliliter (ng/ml)
001	1 or less ng/ml
002-979	002-979 ng/ml
980	980 or greater ng/ml
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

CS Site-Specific Factor 16
Serum Chromogranin A (CgA) Lab Value