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S52.131N ICD-10-CM Code: Displaced fracture of neck of right radius, 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 elbow and forearm (S50-S59)

S52.131N

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

Displaced fracture of neck of right radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Displaced fracture of neck of right radius, 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
S52.13Fracture of neck of radius
S52.131Displaced fracture of neck of right radius
S52.131NDisplaced fracture of neck of right radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for S52.131N in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for S52.131N in this effective period.

Related Child Codes

Official
S52.131ADisplaced fracture of neck of right radius, initial encounter for closed fracture
S52.131BDisplaced fracture of neck of right radius, initial encounter for open fracture type I or II
S52.131CDisplaced fracture of neck of right radius, initial encounter for open fracture type IIIA, IIIB, or IIIC
S52.131DDisplaced fracture of neck of right radius, subsequent encounter for closed fracture with routine healing
S52.131EDisplaced fracture of neck of right radius, subsequent encounter for open fracture type I or II with routine healing

Includes

Official

ICD-10-CM does not list Includes notes for S52.131N in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for S52.131N in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for S52.131N in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for S52.131N in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for S52.131N 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 S52.131N an HCC code?

No. S52.131N 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

S52.131N is the ICD-10-CM diagnosis code for displaced fracture of neck of right radius, subsequent encounter for open fracture type iiia, iiib, or iiic with nonunion. S52.131N 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 elbow and forearm (s50-s59).

S52.131N 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.

S52.131N 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 S52.131N 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 S52.131N sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Child Codes

S52.131ADisplaced fracture of neck of right radius, initial encounter for closed fracture
S52.131BDisplaced fracture of neck of right radius, initial encounter for open fracture type I or II
S52.131CDisplaced fracture of neck of right radius, initial encounter for open fracture type IIIA, IIIB, or IIIC
S52.131DDisplaced fracture of neck of right radius, subsequent encounter for closed fracture with routine healing
S52.131EDisplaced fracture of neck of right radius, subsequent encounter for open fracture type I or II with routine healing
S52.131FDisplaced fracture of neck of right radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
S52.131GDisplaced fracture of neck of right radius, subsequent encounter for closed fracture with delayed healing
S52.131HDisplaced fracture of neck of right radius, subsequent encounter for open fracture type I or II with delayed healing
S52.131JDisplaced fracture of neck of right radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
S52.131KDisplaced fracture of neck of right radius, subsequent encounter for closed fracture with nonunion
S52.131MDisplaced fracture of neck of right radius, subsequent encounter for open fracture type I or II with nonunion
S52.131NDisplaced fracture of neck of right radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
S52.131PDisplaced fracture of neck of right radius, subsequent encounter for closed fracture with malunion
S52.131QDisplaced fracture of neck of right radius, subsequent encounter for open fracture type I or II with malunion
S52.131RDisplaced fracture of neck of right radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S52.131SDisplaced fracture of neck of right radius, sequela

Code Hierarchy

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