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Table 2 ICD10 Code assignment by clinical coders at King’s College Hospital
| Group | Unique patient count |
|---|---|
| I Certain infectious and parasitic diseases | 171 988 |
| II Neoplasms | 259 975 |
| III Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism | 72 939 |
| IV Endocrine, nutritional and metabolic diseases | 272 317 |
| IX Diseases of the circulatory system | 504 581 |
| V Mental and behavioural disorders | 706 990 |
| VI Diseases of the nervous system | 179 710 |
| VII Diseases of the eye and adnexa | 183 841 |
| VIII Diseases of the ear and mastoid process | 13 416 |
| X Diseases of the respiratory system | 242 282 |
| XI Diseases of the digestive system | 598 165 |
| XII Diseases of the skin and subcutaneous tissue | 131 227 |
| XIII Diseases of the musculoskeletal system and connective tissue | 343 803 |
| XIV Diseases of the genitourinary system | 212 198 |
| XIX Injury, poisoning and certain other consequences of external causes | 351 608 |
| XV Pregnancy, childbirth and the puerperium | 327 111 |
| XVI Certain conditions originating in the perinatal period | 78 541 |
| XVII Congenital malformations, deformations and chromosomal abnormalities | 104 242 |
| XVIII Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified | 513 384 |
| XX External causes of morbidity and mortality | 650 984 |
| XXI Factors influencing health status and contact with health services | 1 520 107 |
| XXII Codes for special purposes | 385 417 |
