Skip to content

T21.13XA ICD-10-CM Code: Burn of first degree of upper back, initial encounter

ICD-10-CM Code View

HCC Buddy Code Card

Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.

FY 2026 Apr update / Injury, poisoning and certain other consequences of external causes (S00-T88) / Burns and corrosions of external body surface, specified by site (T20-T25)

T21.13XA

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

Burn of first degree of upper back, initial encounter

Burn of first degree of upper back, initial encounter

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

Basket needed

Code Book Path

Official
T2113XBurns and corrosions of external body surface, specified by site (T20-T25)
T21.13XABurn of first degree of upper back, initial encounter

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for T21.13XA in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for T21.13XA in this effective period.

Related Child Codes

Official
T21.13XDBurn of first degree of upper back, subsequent encounter
T21.13XSBurn of first degree of upper back, sequela

Includes

Official

ICD-10-CM does not list Includes notes for T21.13XA in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for T21.13XA in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for T21.13XA in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for T21.13XA in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for T21.13XA 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 T21.13XA an HCC code?

No. T21.13XA 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

T21.13XA is the ICD-10-CM diagnosis code for burn of first degree of upper back, initial encounter. T21.13XA sits in the ICD-10-CM chapter for injury, poisoning and certain other consequences of external causes (s00-t88), within the section covering burns and corrosions of external body surface, specified by site (t20-t25).

T21.13XA 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.

T21.13XA 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 T21.13XA 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 T21.13XA sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Child Codes

Code Hierarchy

T21.13XABurn of first degree of upper back, initial encounter
T21.13XABurn of first degree of upper back, initial encounter

Open T21.13XA in the Interactive Encoder

See full code details, coding tips, HCC mappings, and related codes in our interactive encoder. Start your 14-day Pro trial. No credit card required.