The Centers for Medicare & Medicaid Services and Centers for Disease Control and Prevention will add about 1,900 diagnosis codes and 3,651 hospital inpatient procedure codes to the ICD-10 coding system for health care claims in fiscal year 2017, the agencies announced this week. The large number of new codes is due to a partial freeze on updates to the ICD-10-CM and ICD-10 PCS codes prior to implementation of ICD-10 on Oct. 1, 2015. Both new and revised PCS codes are available at The new diagnosis codes will be included in the hospital inpatient prospective payment system proposed rule for FY 2017, expected next month.