| Year (ICD Version) | ICD Codes |
| 1939–1948 (ICD-5) | 47b-47f |
| 1949–1957 (ICD-6) | 162, 163 |
| 1958–1967 (ICD-7A) | 162, 163 |
| 1968–1978 (ICD-8A) | 162 |
| 1979–1998 (ICD-9) | 162 |
| 1999–2009 (ICD-10) | C33, C34 |
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.