M18.9 - Osteoarthritis of first carpometacarpal joint, unspecified

The ICD 10 Code for Osteoarthritis of first carpometacarpal joint, unspecified is listed as M18.9.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field	Value
Diagnosis Code:	M18.9
Description:	Osteoarthritis of first carpometacarpal joint, unspecified
Diagnostic Related Groups (MS-DRG v30.0)	553 - Bone Diseases & Arthropathies W Mcc 554 - Bone Diseases & Arthropathies W/o Mcc

Chapter	Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block	Osteoarthritis (M15-M19)
Parent	M18 - Osteoarthritis of first carpometacarpal joint
ICD-9-CM Diagnosis Codes General Equivalence Mappings (GEMS):
ICD 9 Dx Code:	715.34 - Osteoarthrosis, localized, not specified whether primary or secondary, hand (approximate)
ICD 9 Dx Code:	715.94 - Osteoarthrosis, unspecified whether generalized or localized, hand (approximate)
ICD-10-CM Siblings (same level / similar specificity) of M18.9:
M18.0 - Bilateral primary osteoarthritis of first carpometacarpal joints
M18.1 - Unilateral primary osteoarthritis of first carpometacarpal joint
M18.2 - Bilateral post-traumatic osteoarthritis of first carpometacarpal joints
M18.3 - Unilateral post-traumatic osteoarthritis of first carpometacarpal joint
M18.4 - Other bilateral secondary osteoarthritis of first carpometacarpal joints
M18.5 - Other unilateral secondary osteoarthritis of first carpometacarpal joint