| Value | Code Name | Code | Code System | Code Description |
|---|---|---|---|---|
| 0 | Absent | Absent | ||
| 1 | Slight and infrequently present | Slight and infrequently present | ||
| 2 | Mild in amplitude and persistent. Or moderate in amplitude, but only intermittently present | Mild in amplitude and persistent. Or moderate in amplitude, but only intermittently present | ||
| 3 | Moderate in amplitude and present most of the time | Moderate in amplitude and present most of the time | ||
| 4 | Marked in amplitude and present most of the time | Marked in amplitude and present most of the time |