2026 ICD-10-CM Diagnosis Code S30.84ADExternal constriction of flank, subsequent encounter

ICD-10-CM Codes›S00–T88›S30-S39›S30

ICD-10-CM S30.84AD
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

S30.84AD is a billable ICD-10-CM diagnosis code for external constriction of flank, subsequent encounter. The 7th character D marks it as a subsequent encounter code, used during routine care in the healing or recovery phase. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 949 through 950. The code is exempt from POA reporting.

Code Identity

ICD-10-CM Code
S30.84AD
Billable Status
Yes — Valid for Submission
Code Describes
External constriction of flank, subsequent encounter
Short Description
External constriction of flank, subsequent encounter
Same as the full description in the CMS dataset.
Parent Code
S30.84A
External constriction of flank

Code Classification

ChapterS00–T88Injury, poisoning and certain other consequences of external causes
SectionS30-S39Injuries to the abdomen, lower back, lumbar spine, pelvis and external genitals
CategoryS30Superficial injury of abdomen, lower back, pelvis and external genitals
This CodeS30.84ADExternal constriction of flank, subsequent encounter

Present on Admission (POA)Billing

S30.84AD 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 S30.84AD was added to the ICD-10-CM code set for FY 2026, effective October 1, 2025.

Replacement S30.84AD replaces the following previously assigned code(s):

  • S30.841D - External constriction of abdominal wall, subs encntr
FY 2026AddedAdded to the ICD-10-CM code setEffective October 1, 2025.
FY 2026CurrentRevised in the current code setEffective October 1, 2025 through September 30, 2026.

Questions About S30.84ADOverview

Is S30.84AD (External constriction of flank) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report external constriction of flank, subsequent encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What does the 7th character D in S30.84AD mean?

The final character D marks a subsequent encounter: use it for routine care while the external constriction of flank is healing, after active treatment has ended.

What MS-DRG does S30.84AD group to?

When external constriction of flank, subsequent encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 949, 950, with relative weights from 0.6277 to 1.1897 depending on complications. Higher weights mean higher Medicare reimbursement.

Is S30.84AD 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 external constriction of flank, subsequent encounter on inpatient claims.