About the Code Lookup

This site is dedicated exclusively to helping you look up ICD-10 codes, quickly access the codes you use most, and become more comfortable with the new code set in general. No ads, no spam, and it's free for everybody.

Our hope is that we can ease your search for ICD-10 codes just a little, and maybe even make it fun.

Also, for good measure you should read this (legal disclaimer).

And here's our privacy policy.

Have feedback?

We'd love to hear it!

{{a.name}} - {{a.desc}} Tab/click for more specific Billable
Sorry, we weren't able to find any results that match your search. Try changing a word or two, or being a little more specific. Thanks!
ICD-10 B27.9 - Infectious mononucleosis, unspecified
Chapter 1 Section B25-B34

B27.9

ICD-10 Not billable

Infectious mononucleosis, unspecified

Use additional code: code to identify resistance to antimicrobial drugs (Z16.-) (per Chapter 1)
From Chapter 1:
  • diseases generally recognized as communicable or transmissible
From Chapter 1:
  • certain localized infections - see body system-related chapters
From Chapter 1:
  • carrier or suspected carrier of infectious disease (Z22.-)
  • infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
  • infectious and parasitic diseases specific to the perinatal period (P35-P39)
  • influenza and other acute respiratory infections (J00-J22)
B27.9 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
B27.90
Infectious mononucleosis, unspecified without complication
Billable
10
B27.91
Infectious mononucleosis, unspecified with polyneuropathy
Billable
10
B27.92
Infectious mononucleosis, unspecified with meningitis
Billable
10
B27.99
Infectious mononucleosis, unspecified with other complication
Billable
      
Showing results for: {{searchResults.terms}}
More results: