ICD-10 Guide

M18.12

Name: ICD-10-CM Medical Diagnosis Codes
Creator: Centers for Medicare & Medicaid Services
License: https://www.cms.gov/medicare/coding/icd10

Billable

Unilateral primary osteoarthritis of first carpometacarpal joint, left hand

BILLABLE STATUSYes

IMPLEMENTATION DATEOctober 1, 2015

LAST UPDATED08/26/2025

Code Description

ICD-10 M18.12 is a billable code used to indicate a diagnosis of unilateral primary osteoarthritis of first carpometacarpal joint, left hand.

Key Diagnostic Point:

Unilateral primary osteoarthritis of first carpometacarpal joint, left hand

M18.12

Code Description

Key Diagnostic Point:

Related ICD-10 Codes

M18.12

Code Description

Key Diagnostic Point:

Related ICD-10 Codes