An indication of the additional Ann Arbor Staging System stage designation based on presence or absence of specific symptoms.
National Codes:
| CODE | INDICATOR | DESCRIPTION |
| A | A | No Symptoms |
| B | B | Presence of any of the following: unexplained persistent or recurrent fever (greater than 38°C / 101.5°F), drenching night sweats, unexplained weight loss of 10% or more within the last 6 months |
This attribute is also known by these names:
| Context | Alias |
|---|---|
| formerly | ANN ARBOR SYMPTOMS INDICATOR |
| plural | ANN ARBOR SYMPTOMS INDICATION CODES |