def condition_coding_system(coding_system_oid):
    """Determine from the OID the coding system for conditions"""
    if coding_system_oid == "2.16.840.1.113883.6.90":
        return "ICD10CM"
    elif coding_system_oid == "2.16.840.1.113883.6.103":
        return "ICD9CM"
    elif coding_system_oid == '2.16.840.1.113883.6.96':
        return 'SNOMED'
    else:
        return False