What is ICD-10 code S98.122D?

S98.122D is the ICD-10-CM diagnosis code for Partial traumatic amputation of left great toe, subsequent encounter. It belongs to the ICD-10-CM chapter for injury, poisoning and certain other consequences of external causes (s00-t88). S98.122D is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. S98.122D is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Is S98.122D billable?

Yes. S98.122D is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. S98.122D is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Which HCC does S98.122D map to under V28?

S98.122D has no payable CMS-HCC V28 mapping in the final FY2026 CMS file.

What RAF reference is published for S98.122D?

S98.122D has no V28 reference coefficient because the final FY2026 source verifies no payable V28 mapping.

What is the V28 vs V24 difference for S98.122D?

S98.122D has verified no payable V28 mapping in the final FY2026 source. Select a historical effective period before making any V24 comparison.

What documentation supports S98.122D?

S98.122D is not a CMS-HCC V28 payment code in the verified current source, so MEAT is not the payment hook. Documentation still has to support the diagnosis if you report it.

2026 ICD-10-CM S98.122D: Partial traumatic amputation

S98.122D is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools

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.

Code lookupS98.122DEffective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Injury, poisoning and certain other consequences of external causes (S00-T88) / Injuries to the ankle and foot (S90-S99)

S98.122D

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

Partial traumatic amputation of left great toe, subsequent encounter

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

Mapped

HCC 189

Amputation Status/Lower Limb/...

Code-level coefficient reference

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

S98.12Partial traumatic amputation of great toe

S98.122Partial traumatic amputation of left great toe

S98.122DPartial traumatic amputation of left great toe, subsequent encounter

Inclusion Terms

Official

ICD-10-CM does not list inclusion terms for S98.122D in this effective period.

Excludes 2

Official

ICD-10-CM does not list Excludes 2 notes for S98.122D in this effective period.

Related Child Codes

Official

S98.122APartial traumatic amputation of left great toe, initial encounter

S98.122SPartial traumatic amputation of left great toe, sequela

Includes

Official

ICD-10-CM does not list Includes notes for S98.122D in this effective period.

Excludes 1

Official

ICD-10-CM does not list Excludes 1 notes for S98.122D in this effective period.

Code First

Official

ICD-10-CM does not list Code First sequencing instructions for S98.122D in this effective period.

Use Additional

Official

ICD-10-CM does not list Use Additional Code instructions for S98.122D in this effective period.

Code Also

Official

ICD-10-CM does not list Code Also instructions for S98.122D in this effective period.

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is S98.122D an HCC code?

S98.122D is not in the CMS-HCC V28 or V24 community payment model. S98.122D has a separate mapping under the CMS-HCC ESRD model (HCC 189 (Amputation Status/Lower Limb/Amputation Complications)); the applicable result needs member context.

Code: S98.122D
Description: Partial traumatic amputation of left great toe, subsequent encounter
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

HCC Category Mapping

ESRDHCC 189, Amputation Status/Lower Limb/Amputation Complications

Not separately weighted

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work S98.122D in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT Criteria for S98.122D

For S98.122D to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically, it has to be re-documented and supported each calendar year.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed S98.122D during that encounter, not just copy-forwarded from a problem list.

Coder workflow notes

Get the V28 mapping + MEAT cheat sheet

One printable reference: check representative V28 mappings and the documentation reminders your note needs. Free, no card.

Free PDF. No card. Unsubscribe anytime.

What This Code Means

S98.122D is the ICD-10-CM diagnosis code for partial traumatic amputation of left great toe, subsequent encounter. S98.122D 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 ankle and foot (s90-s99).

S98.122D has no mapping under the CMS-HCC V28 or V24 community payment models. S98.122D has a separate mapping under the CMS-HCC ESRD model (HCC 189 (Amputation Status/Lower Limb/Amputation Complications)); the applicable result needs member context. Do not assign V28 risk adjustment value from this page; verify the applicable model and payment year before using this code for risk adjustment.

S98.122D is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28 or V24 community payment models. It does map under the CMS-HCC ESRD model, and that result depends on member context rather than on the V28 community model. Do not assign risk adjustment value from this page when no source-backed mapping is shown. Coders should check the current model files and select only the specificity supported by the provider documentation.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for S98.122D sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.