| M81.0 | 
	Postmenopausal osteoporosis 
 | 
	| M81.1 | 
	Postoophorectomy osteoporosis 
 | 
	| M81.2 | 
	Osteoporosis of disuse 
Excludes:
- Sudeck's atrophy ( M89.0 )
  
 | 
	| M81.3 | 
	Postsurgical malabsorption osteoporosis 
 | 
	| M81.4 | 
	Drug-induced osteoporosis 
Use additional external cause code (Chapter XX), if desired, to identify drug.
 | 
	| M81.5 | 
	Idiopathic osteoporosis 
 | 
	| M81.6 | 
	Localized osteoporosis [Lequesne] 
Excludes:
- Sudeck's atrophy ( M89.0 )
  
 | 
	| M81.8 | 
	Other osteoporosis 
Senile osteoporosis 
 | 
	| M81.9 | 
	Osteoporosis, unspecified 
 |