Abstract Aim To analyse the clinical coding performed at a tertiary centre after patient discharge and compare it with the clinical summary to identify any inconsistency and its financial implications. Method Fifty patient episodes were selected randomly between June 2023 and August 2023 under the general surgery department. Clinical notes, discharge summaries and existing clinical codes were scrutinized by liaison with the clinical coding department. Financial losses were noted, and the summary was later presented at the local clinical governance meeting. Results A total of £38,760 was lost in 50 patients. Loss incurred was primarily due to incomplete information in the discharge summary, related to the patient’s comorbidities, incomplete diagnosis, and procedure/investigations. These results were discussed in a clinical governance meeting and a poster was made to disseminate the conclusion and improve the quality of the discharge summary. Conclusions A total of £38,760 of funding was lost due to discrepancies in the clinical coding. An intervention in the form of a poster and teaching session was conducted for junior doctors and a repeat cycle is planned in the due course of time to improve the quality and minimise the loss of funding.