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S52.123P ICD-10-CM Code: Displaced fracture of head of unspecified radius, subsequent encounter for closed fracture with malunion

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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)

S52.123P

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

Displaced fracture of head of unspecified radius, subsequent encounter for closed fracture with malunion

Displaced fracture of head of unspecified radius, subsequent encounter for closed fracture with malunion

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
S52.12Fracture of head of radius
S52.123Displaced fracture of head of unspecified radius
S52.123PDisplaced fracture of head of unspecified radius, subsequent encounter for closed fracture with malunion

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for S52.123P in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for S52.123P in this effective period.

Related Child Codes

Official
S52.123ADisplaced fracture of head of unspecified radius, initial encounter for closed fracture
S52.123BDisplaced fracture of head of unspecified radius, initial encounter for open fracture type I or II
S52.123CDisplaced fracture of head of unspecified radius, initial encounter for open fracture type IIIA, IIIB, or IIIC
S52.123DDisplaced fracture of head of unspecified radius, subsequent encounter for closed fracture with routine healing
S52.123EDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type I or II with routine healing

Includes

Official

ICD-10-CM does not list Includes notes for S52.123P in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for S52.123P in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for S52.123P in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for S52.123P in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for S52.123P 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 S52.123P an HCC code?

No. S52.123P 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

S52.123P is the ICD-10-CM diagnosis code for displaced fracture of head of unspecified radius, subsequent encounter for closed fracture with malunion. S52.123P 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).

S52.123P 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.

S52.123P 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 S52.123P 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 S52.123P sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Child Codes

S52.123ADisplaced fracture of head of unspecified radius, initial encounter for closed fracture
S52.123BDisplaced fracture of head of unspecified radius, initial encounter for open fracture type I or II
S52.123CDisplaced fracture of head of unspecified radius, initial encounter for open fracture type IIIA, IIIB, or IIIC
S52.123DDisplaced fracture of head of unspecified radius, subsequent encounter for closed fracture with routine healing
S52.123EDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type I or II with routine healing
S52.123FDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
S52.123GDisplaced fracture of head of unspecified radius, subsequent encounter for closed fracture with delayed healing
S52.123HDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type I or II with delayed healing
S52.123JDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
S52.123KDisplaced fracture of head of unspecified radius, subsequent encounter for closed fracture with nonunion
S52.123MDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type I or II with nonunion
S52.123NDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
S52.123PDisplaced fracture of head of unspecified radius, subsequent encounter for closed fracture with malunion
S52.123QDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type I or II with malunion
S52.123RDisplaced fracture of head of unspecified radius, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
S52.123SDisplaced fracture of head of unspecified radius, sequela

Code Hierarchy

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