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S82.091N ICD-10-CM Code: Other fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

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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)

S82.091N

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

Other fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Other fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

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
S82.09Other fracture of patella
S82.091Other fracture of right patella
S82.091NOther fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for S82.091N in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for S82.091N in this effective period.

Related Child Codes

Official
S82.091AOther fracture of right patella, initial encounter for closed fracture
S82.091BOther fracture of right patella, initial encounter for open fracture type I or II
S82.091COther fracture of right patella, initial encounter for open fracture type IIIA, IIIB, or IIIC
S82.091DOther fracture of right patella, subsequent encounter for closed fracture with routine healing
S82.091EOther fracture of right patella, subsequent encounter for open fracture type I or II with routine healing

Includes

Official

ICD-10-CM does not list Includes notes for S82.091N in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for S82.091N in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for S82.091N in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for S82.091N in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for S82.091N 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 S82.091N an HCC code?

No. S82.091N 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

S82.091N is the ICD-10-CM diagnosis code for other fracture of right patella, subsequent encounter for open fracture type iiia, iiib, or iiic with nonunion. S82.091N 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).

S82.091N 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.

S82.091N 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 S82.091N 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 S82.091N sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Child Codes

S82.091AOther fracture of right patella, initial encounter for closed fracture
S82.091BOther fracture of right patella, initial encounter for open fracture type I or II
S82.091COther fracture of right patella, initial encounter for open fracture type IIIA, IIIB, or IIIC
S82.091DOther fracture of right patella, subsequent encounter for closed fracture with routine healing
S82.091EOther fracture of right patella, subsequent encounter for open fracture type I or II with routine healing
S82.091FOther fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
S82.091GOther fracture of right patella, subsequent encounter for closed fracture with delayed healing
S82.091HOther fracture of right patella, subsequent encounter for open fracture type I or II with delayed healing
S82.091JOther fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
S82.091KOther fracture of right patella, subsequent encounter for closed fracture with nonunion
S82.091MOther fracture of right patella, subsequent encounter for open fracture type I or II with nonunion
S82.091NOther fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
S82.091POther fracture of right patella, subsequent encounter for closed fracture with malunion
S82.091QOther fracture of right patella, subsequent encounter for open fracture type I or II with malunion
S82.091ROther fracture of right patella, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S82.091SOther fracture of right patella, sequela

Code Hierarchy

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