Mumps (B26) ICD-10-CM
The B26 code range covers mumps with 13 ICD-10-CM diagnosis codes. 11 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- epidemic parotitis
- infectious parotitis
Codes in the B26 Range 13 codes · 11 billable
- B26 MumpsNon-billable
- B26.0 Mumps orchitis
- B26.1 Mumps meningitis
- B26.2 Mumps encephalitis
- B26.3 Mumps pancreatitis
- B26.8 Mumps with other complicationsNon-billable
- B26.81 Mumps hepatitis
- B26.82 Mumps myocarditis
- B26.83 Mumps nephritis
- B26.84 Mumps polyneuropathy
- B26.85 Mumps arthritis
- B26.89 Other mumps complications
- B26.9 Mumps without complication
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the B26 range.
Mumps
An acute infectious disease caused by RUBULAVIRUS, spread by direct contact, airborne droplet nuclei, fomites contaminated by infectious saliva, and perhaps urine, and usually seen in children under the age of 15, although adults may also be affected. (From Dorland, 28th ed)
About the B26 Code Range
Mumps is an infectious disease caused by rubulavirus. It can spread through direct contact or airborne droplets.
Within other viral diseases, B26 separates mumps without complication from mumps with complications. The subdivisions name orchitis (testicle inflammation), meningitis (inflammation around the brain and spinal cord), encephalitis (brain inflammation), and pancreatitis (pancreas inflammation).
B26.8 groups other complications, with further subdivisions for conditions affecting the liver, heart, kidneys, nerves, or joints, and for other mumps complications.
Questions About This Page
How many billable codes are in the B26 range?
Of the 13 codes in this range, 11 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the B26 range classify?
The range classifies mumps. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
