2026 ICD-10-CM Diagnosis Code S30.82ASBlister (nonthermal) of flank, sequela
S30.82AS is a billable ICD-10-CM diagnosis code for blister (nonthermal) of flank, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 604 through 605. The code is exempt from POA reporting.
Code Identity
Code Classification
Present on Admission (POA)Billing
S30.82AS is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Superficial injury of abdomen, lower back, pelvis and external genitals (S30). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Code History & ChangesHistory
New Code S30.82AS was added to the ICD-10-CM code set for FY 2026, effective October 1, 2025.
Replacement S30.82AS replaces the following previously assigned code(s):
- S30.821S - Blister (nonthermal) of abdominal wall, sequela
Questions About S30.82ASOverview
Is S30.82AS (Blister (nonthermal) of flank) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report blister (nonthermal) of flank, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S30.82AS mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the blister (nonthermal) of flank itself has resolved, not the original event.
What MS-DRG does S30.82AS group to?
When blister (nonthermal) of flank, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 604, 605, with relative weights from 0.9160 to 1.4721 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S30.82AS exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for blister (nonthermal) of flank, sequela on inpatient claims.
