Chronic Hepatitis C

Chronic Hepatitis C is indexed under Infectious-Origin Chronic, Viral Hepatitis. Also known as CHC, chronic HCV infection, HCV, hep C.

US prevalence

~2.4 million (many undiagnosed); declining with DAA therapy Source: CDC 2023; NHANES | CDC; HHS. Federal source. Label: VERIFIED.

ICD-10-CM codes

B18.2

Typical onset

Baby boomers (1945-1965) highest prevalence; rising in young PWID

Course

managed

Body systems

hepatic, immune

Sex differences

M slightly > F

Racial and ethnic differences

Higher in Black Americans (~2x), AIAN populations; linked to PWID and incarceration disparities

What this page does not establish

These figures describe populations, not individuals, and none of them is a diagnosis or a treatment recommendation. Prevalence estimates are approximate and reflect published ranges. Disparity figures are reported patterns, not causes.

Taxonomy last reviewed 2026-05-19. Each figure on the interactive page carries its own source and retrieval date, which can be later than this review.

Browse all indexed conditions · Source registry · Methodology · Known limitations