Convert ICD-9 491.9 to ICD-10

ICD-9 code 491.9, Chronic bronchitis NOS, crosswalked to ICD-10 with the official CMS General Equivalence Mappings. Convert another code below.

Try:

Official CMS General Equivalence Mappings Final GEMs release (FY 2018) Maps in both directions

1 ICD-10 mapping for ICD-9 491.9

From the official CMS General Equivalence Mappings. Review each mapping's flags before selecting the final code. Convert another code

ICD-9 code 491.9, "Chronic bronchitis NOS", maps to ICD-10 code J42, "Unspecified chronic bronchitis". This mapping carries no qualifying flags, so it is considered an exact equivalent. The crosswalk comes from the official CMS General Equivalence Mappings.

ICD‑9 Code

491.9

Chronic bronchitis NOS

ICD‑10 Code

J42

Unspecified chronic bronchitis

– This is a direct match with no additional mapping qualifiers.

See everything about the source code, including its category, synonyms, and history: open the 491.9 code page → Or run the reverse crosswalk: convert J42 back to ICD-9 →