Table 2.
Extent of change by chapter
| ICD-10 chapter | CorrespondingICD-11 chapter | ICD-10 leaf codes | ICD-11 leaf codes | % change | |
|---|---|---|---|---|---|
| I | Certain infectious and parasitic diseases | 1 | 783 | 835 | 6.6% |
| II | Neoplasms | 2 | 759 | 1056 | 39.1% |
| III | Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism | 3 & 4 | 165 | 424 | 157.0% |
| IV | Endocrine, nutritional and metabolic diseases | 5 | 356 | 541 | 52.0% |
| V | Mental and behavioral disorders | 6 | 407 | 718 | 76.4% |
| VI | Diseases of the nervous system | 8 | 335 | 719 | 114.6% |
| VII | Diseases of the eye and adnexa | 9 | 262 | 615 | 134.7% |
| VIII | Diseases of the ear and mastoid process | 10 | 113 | 135 | 19.5% |
| IX | Diseases of the circulatory system | 11 | 383 | 479 | 25.1% |
| X | Diseases of the respiratory system | 12 | 234 | 296 | 26.5% |
| XI | Diseases of the digestive system | 13 | 435 | 804 | 84.8% |
| XII | Diseases of the skin and subcutaneous tissue | 14 | 342 | 615 | 79.8% |
| XIII | Diseases of the musculoskeletal system and connective tissue | 15 | 545 | 364 | −33.2% |
| XIV | Diseases of the genitourinary system | 16 | 438 | 447 | 2.1% |
| XV | Pregnancy, childbirth, and the puerperium | 18 | 434 | 437 | 0.7% |
| XVI | Certain conditions originating in the perinatal period | 19 | 337 | 525 | 55.8% |
| XVII | Congenital malformations, deformities, and chromosomal abnormalities | 20 | 619 | 1118 | 80.6% |
| XVIII | Symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified | 21 | 340 | 1078 | 217.1% |
| XIX | Injury, poisoning, and certain other consequences of external causes | 22 | 1278 | 1668 | 30.5% |
| XX | External causes of morbidity and mortality | 23 | 1372 | 842 | −38.6% |
| XXI | Factors influencing health status and contact with health services | 24 | 630 | 759 | 20.5% |
| XXII | Codes for special purposes | 25 | 40 | 17 | −57.5% |
| Overall | 10 607 | 14 492* | 36.6%* | ||
*
not including chapters 7 and 17.