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ICD-10/S99.122K

S99.122K ICD-10-CM Code: Salter-Harris Type II physeal fracture of left metatarsal, subsequent encounter for fracture with nonunion

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Salter-Harris Type II physeal fracture of left metatarsal, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S99.122K).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S99.122K in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Change history

  • FY2017 — 2016-10-01
    Added to the code set
    Salter-Harris Type II physeal fracture of left metatarsal, subsequent encounter for fracture with nonunion
    FY2017 changes

Verify Before Coding

  • No Medicare Code Editor or MS-DRG Definitions Manual restrictions apply to this code.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Contextual Map

Every relationship of S99.122K in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88) [Hierarchy]
  • S90-S99 — Injuries to the ankle and foot [Hierarchy]

Referenced by Excludes2 notes

  • S89 — Other and unspecified injuries of lower leg [Excludes2](via S99.-): “other and unspecified injuries of ankle and foot (S99.-)” · check together
  • S92.3 — Fracture of metatarsal bone(s) [Excludes2](via S99.1.-): “Physeal fracture of metatarsal (S99.1-)” · check together

Clinical classification (CCSR)

  • INJ042 — Fracture of lower limb (except hip), subsequent encounter [CCSR]

Potential MS-DRG

  • DRG 949 — AFTERCARE WITH CC/MCC [MS-DRG]: “AFTERCARE WITH CC/MCC (MDC 23)”
  • DRG 950 — AFTERCARE WITHOUT CC/MCC [MS-DRG]: “AFTERCARE WITHOUT CC/MCC (MDC 23)”

MDC crossing · procedures (1235)

  • MDC 23 — Factors Influencing Health Status and Other Contacts with Health Services [MDC crossing]: “Factors Influencing Health Status and Other Contacts with Health Services — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • F003GKZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Audiovisual Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GMZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Augmentative / Alternative Communication Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GPZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Computer — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GYZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body using Other Equipment — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • F003GZZ — Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body [Same-MDC procedure]: “Communicative/Cognitive Integration Skills Assessment of Neurological System - Whole Body — grouped in MDC 23, the procedure side of this code's crossing.” · check together
  • and 1230 more

Nearest codes (40)

  • S99 — Other and unspecified injuries of ankle and foot [Sibling]
  • S99.119B — Salter-Harris Type I physeal fracture of unspecified metatarsal, initial encounter for open fracture [Sibling]
  • S99.119D — Salter-Harris Type I physeal fracture of unspecified metatarsal, subsequent encounter for fracture with routine healing [Sibling]
  • S99.119G — Salter-Harris Type I physeal fracture of unspecified metatarsal, subsequent encounter for fracture with delayed healing [Sibling]
  • S99.119K — Salter-Harris Type I physeal fracture of unspecified metatarsal, subsequent encounter for fracture with nonunion [Sibling]
  • S99.119P — Salter-Harris Type I physeal fracture of unspecified metatarsal, subsequent encounter for fracture with malunion [Sibling]
  • S99.119S — Salter-Harris Type I physeal fracture of unspecified metatarsal, sequela [Sibling]
  • S99.12 — Salter-Harris Type II physeal fracture of metatarsal [Sibling]
  • and 32 more

Change history

  • FY2017 — Added to the code set [Change history]

Referenced by Other Codes

Clinical classification (AHRQ CCSR):INJ042 — Fracture of lower limb (except hip), subsequent encounter (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 2 MS-DRGs: DRG 949 (MDC 23), DRG 950 (MDC 23).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Official ICD-10-CM tabular notes on other codes that name S99.122K or its code family.

2 Excludes2 notes: S89 (via S99.-), S92.3 (via S99.1.-).

Frequently Asked Questions (FAQ) & Clinical Guidance

Does S99.122K require a 7th character?

Yes. The appropriate 7th character is to be added to each code from subcategories S99.1.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S99.122K in its code family, with their registry titles.

  • S99.122 — Salter-Harris Type II physeal fracture of left metatarsal
  • S99.122A — Salter-Harris Type II physeal fracture of left metatarsal, initial encounter for closed fracture
  • S99.122B — Salter-Harris Type II physeal fracture of left metatarsal, initial encounter for open fracture
  • S99.122D — Salter-Harris Type II physeal fracture of left metatarsal, subsequent encounter for fracture with routine healing
  • S99.122G — Salter-Harris Type II physeal fracture of left metatarsal, subsequent encounter for fracture with delayed healing
  • S99.122P — Salter-Harris Type II physeal fracture of left metatarsal, subsequent encounter for fracture with malunion
  • S99.122S — Salter-Harris Type II physeal fracture of left metatarsal, sequela
  • S99.129 — Salter-Harris Type II physeal fracture of unspecified metatarsal
  • S99.129A — Salter-Harris Type II physeal fracture of unspecified metatarsal, initial encounter for closed fracture
  • S99.129B — Salter-Harris Type II physeal fracture of unspecified metatarsal, initial encounter for open fracture

View all codes in the S99 family