ICD-10 codes list from CMS:

• ICD-10 PDF Master List of All Codes from CMS  
• CMS ICD-10 coding system explained and GEM (General Equivalence Mapping) between ICD-9 and ICD-10
• CMS: ICD-10  Frequently Asked Questions (FAQ)
• Quick References and Links for ICD-10 transition from CMS

Use “CTRL + F” to find the word that you are looking for in this large list.

I find that the Free online code lookup widgets like http://www.icd10data.com/ are easier to search with.