A46 — Erysipelas
Is A46 billable?
Yes — A46 is billable for FY2027. A46 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. A46 may be submitted for encounters from October 1, 2026 through September 30, 2027.
A46 at a glance
| Code | A46 |
|---|---|
| Description | Erysipelas |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does A46 group to?
A46 sits in MDC 09 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.
- 602Cellulitis with MCCmedical
- 603Cellulitis without MCCmedical
How is A46 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to A46. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Erysipelas (gangrenous) (infantile) (newborn) (phlegmonous) (suppurative)
- Erysipelas › external ear (gangrenous) (infantile) (newborn) (phlegmonous) (suppurative)
- Arthritis, arthritic › due to or associated with › erysipelas (acute) (chronic) (nonpyogenic) (subacute)
- Otitis › externa › in › erysipelas (acute)
Excludes1 — never code together
The conditions below can never be reported together with A46 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- postpartum or puerperal erysipelas (O86.89)
Use additional code — inherited from Chapter 1
Report an additional code alongside A46 to fully describe the condition. A46 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 A46, but a patient may have both at the same time. When documentation supports it, A46 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 A46 existed?
A46 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.