The CMS outlines additional unspecified diagnosis codes that are excluded from both ICD-9 and ICD-10 reporting beginning January 2, 2017.

CMS missive states the codes, “will not be accepted in the Alleged Cause of Injury, Incident or Illness (Field 15) or in any ICD Diagnosis Code field starting with Field 18. Updates to previously submitted records using these excluded codes, will also be rejected.”

These additions and upcoming changes to the ICD-10 code set underline the needs for clinical documentation improvement and ICD-10 training, experts say, as code and rule freezes are lifted by the healthcare payment agency. ICD-10-CM will include 1900 new codes and several more changes and deletions. Attention to documentation will be paramount.