Polyarteritis nodosa and related conditions - M30
Excludes1: It indicates that the conditions described by two codes cannot occur together in the same patient. These codes are mutually exclusive.
Type 1 Excludes:
- microscopic polyarteritis (M31.7)
These ranges represents subcategories of Polyarteritis nodosa and related conditions. The "M30" signifies that these are the diseases within this broad category.