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S82.301C ICD-10-CM Code: Unspecified fracture of lower end of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC

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FY 2026 Apr update / Injury, poisoning and certain other consequences of external causes (S00-T88) / Injuries to the knee and lower leg (S80-S89)

S82.301C

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Unspecified fracture of lower end of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC

Unspecified fracture of lower end of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC

CMS-HCC V28

0

0

RAF 0

CMS-HCC V24

0

0

RAF 0

ACA/HHS

0

0

RAF 0

ESRD/PACE

0

0

RAF 0

RXHCC

0

0

RAF 0

Code Trumping

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Code Book Path

Official
S82.30Unspecified fracture of lower end of tibia
S82.301Unspecified fracture of lower end of right tibia
S82.301CUnspecified fracture of lower end of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for S82.301C in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for S82.301C in this effective period.

Related Child Codes

Official
S82.301AUnspecified fracture of lower end of right tibia, initial encounter for closed fracture
S82.301BUnspecified fracture of lower end of right tibia, initial encounter for open fracture type I or II
S82.301DUnspecified fracture of lower end of right tibia, subsequent encounter for closed fracture with routine healing
S82.301EUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type I or II with routine healing
S82.301FUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing

Includes

Official

ICD-10-CM does not list Includes notes for S82.301C in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for S82.301C in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for S82.301C in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for S82.301C in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for S82.301C in this effective period.

Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.

Is S82.301C an HCC code?

No. S82.301C is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

S82.301C is the ICD-10-CM diagnosis code for unspecified fracture of lower end of right tibia, initial encounter for open fracture type iiia, iiib, or iiic. S82.301C sits in the ICD-10-CM chapter for injury, poisoning and certain other consequences of external causes (s00-t88), within the section covering injuries to the knee and lower leg (s80-s89).

S82.301C is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.

S82.301C is a billable ICD-10-CM code that can be reported on claims but does not currently contribute to a Medicare Advantage member's RAF score under any CMS risk adjustment model (V28, V24, ESRD, or RxHCC). Coders reviewing S82.301C should check whether additional documentation would support a more specific child code in the same hierarchy that does map to a payment HCC, capturing the correct specificity is the highest-impact RAF improvement available within accurate coding.

HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for S82.301C sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Child Codes

S82.301AUnspecified fracture of lower end of right tibia, initial encounter for closed fracture
S82.301BUnspecified fracture of lower end of right tibia, initial encounter for open fracture type I or II
S82.301CUnspecified fracture of lower end of right tibia, initial encounter for open fracture type IIIA, IIIB, or IIIC
S82.301DUnspecified fracture of lower end of right tibia, subsequent encounter for closed fracture with routine healing
S82.301EUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type I or II with routine healing
S82.301FUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
S82.301GUnspecified fracture of lower end of right tibia, subsequent encounter for closed fracture with delayed healing
S82.301HUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type I or II with delayed healing
S82.301JUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
S82.301KUnspecified fracture of lower end of right tibia, subsequent encounter for closed fracture with nonunion
S82.301MUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type I or II with nonunion
S82.301NUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
S82.301PUnspecified fracture of lower end of right tibia, subsequent encounter for closed fracture with malunion
S82.301QUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type I or II with malunion
S82.301RUnspecified fracture of lower end of right tibia, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S82.301SUnspecified fracture of lower end of right tibia, sequela

Code Hierarchy

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