B58 — Toxoplasmosis
Is B58 billable?
No — B58 is a non-billable header code. B58 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 11 billable codes beneath B58.
Billable codes under this header
- B58.1Toxoplasma hepatitis
- B58.2Toxoplasma meningoencephalitis
- B58.3Pulmonary toxoplasmosis
- B58.9Toxoplasmosis, unspecified
- B58.00Toxoplasma oculopathy, unspecified
- B58.01Toxoplasma chorioretinitis
- B58.09Other toxoplasma oculopathy
- B58.81Toxoplasma myocarditis
- B58.82Toxoplasma myositis
- B58.83Toxoplasma tubulo-interstitial nephropathy
- B58.89Toxoplasmosis with other organ involvement
B58 at a glance
| Code | B58 |
|---|---|
| Description | Toxoplasmosis |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with B58 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- congenital toxoplasmosis (P37.1)
Includes
Conditions classified to B58.
- infection due to Toxoplasma gondii
Excludes1 — never code together — inherited from B50-B64
The conditions below can never be reported together with B58 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 1
Report an additional code alongside B58 to fully describe the condition. B58 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 B58, but a patient may have both at the same time. When documentation supports it, B58 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)
What codes fall under B58? (6)
How long has B58 existed?
B58 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.
Which codes are confused with B58?
ICD-10-CM declares these codes mutually exclusive with B58 — exactly one of each pair can be correct for a given encounter.