B79 — Trichuriasis
Is B79 billable?
Yes — B79 is billable for FY2027. B79 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. B79 may be submitted for encounters from October 1, 2026 through September 30, 2027.
B79 at a glance
| Code | B79 |
|---|---|
| Description | Trichuriasis |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does B79 group to?
B79 sits in MDC 06 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 391Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders with MCCmedical
- 392Esophagitis, Gastroenteritis and Miscellaneous Digestive Disorders without MCCmedical
As a secondary diagnosis, B79 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is B79 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to B79. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Trichocephaliasis, trichocephalosis
- Trichocephalus infestation
- Trichuriasis
- Trichuris trichiura (infection) (infestation) (any site)
- Whipworm (disease) (infection) (infestation)
- Disease, diseased › whipworm
- Infection, infected, infective › Trichuris (opportunistic)
- Infection, infected, infective › whipworm (opportunistic)
- Infestation › Trichocephalus
- Infestation › Trichuris
- Infestation › whipworm
- Diarrhea, diarrheal › due to › Trichuris trichiuria (disease) (infantile) (inflammatory)
Includes
Conditions classified to B79.
- trichocephaliasis
- whipworm (disease)(infection)
Use additional code — inherited from Chapter 1
Report an additional code alongside B79 to fully describe the condition. B79 is sequenced first.
- code to identify resistance to antimicrobial drugs (Z16.-)
Excludes2 — not included here — inherited from Chapter 1
The conditions below are not part of B79, but a patient may have both at the same time. When documentation supports it, B79 and the excluded code may both be reported.
- carrier or suspected carrier of infectious disease (Z22.-)
- certain localized infections - see body system-related chapters
- 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)
How long has B79 existed?
B79 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.