Clinical coding of ICD-10 and OPCS in elective local anaesthetic and IV sedation cases

Treatments facilitated by healthcare trusts are transformed into codes through which payments are organised. Accurate coding is essential for correct payment, inaccurate clinical coding results in significant loss of income. Our OMFS unit performs regular day-case procedures with data recorded in a standardised proforma. An audit was performed to determine the accuracy of ICD and OPCS codes generated by the OMFS department to identify factors contributing to inaccuracies leading to loss of income. All local anaesthetic and IV sedation cases were reviewed at two separate 3 monthly time frames within the OMFS department with 100 cases per cycle. A gold standard of 100% coding information recorded and accuracy were set. The first data cycle demonstrated a number of factors to improve the clinical coding process including implementing a new clinical coding form. This was utilised in the second audit cycle. Regarding ICD-10 the first audit cycle yielded a 65% accuracy of primary diagnoses. Following recommendations this improved to 72%. Coding accuracy in the first cycle was recorded as 62% with improvement to 78% in the second cycle. OPCS data accuracy was 80% in the first cycle improving to 90% in the second cycle. Secondary or bilateral procedures also showed improvement from 83% to 89% accuracy in the second cycle. Across the audit cycle £20,000 of revenue was generated. Inaccuracies in clinical coding reduces income, improved understanding of error sources can ensure income is commensurate with clinical activity.