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S99.002K ICD-10-CM Code: Unspecified physeal fracture of left calcaneus, 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

Unspecified physeal fracture of left calcaneus, subsequent encounter for fracture with nonunion is a billable ICD-10-CM diagnosis code (S99.002K).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S99.002K 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.

Frequently Compared Codes

The official Excludes notes on S99.002K name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

  • FY2017 — 2016-10-01
    Added to the code set
    Unspecified physeal fracture of left calcaneus, 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.

Relationships & Classification

Other codes that name S99.002K or its code family, from the CMS ICD-10-CM tabular instructional notes. Tabular-note edges are stored at the code family level that carries each note.

2 Excludes2 notes: S89 (via S99.-), S92.0 (via S99.0.-).

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.

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.

Related Codes

Same condition, opposite side

Same category and title, differing only in which side of the body is affected.

S99.001K — Unspecified physeal fracture of right calcaneus, subsequent encounter for fracture with nonunion (right), S99.009K — Unspecified physeal fracture of unspecified calcaneus, subsequent encounter for fracture with nonunion (unspecified)

Same injury — initial / subsequent / sequela

Same injury, coded at a different phase of treatment via the 7th character.

S99.002A — Unspecified physeal fracture of left calcaneus, initial encounter for closed fracture (initial encounter), S99.002B — Unspecified physeal fracture of left calcaneus, initial encounter for open fracture (initial encounter), S99.002D — Unspecified physeal fracture of left calcaneus, subsequent encounter for fracture with routine healing (subsequent encounter), S99.002G — Unspecified physeal fracture of left calcaneus, subsequent encounter for fracture with delayed healing (subsequent encounter), S99.002P — Unspecified physeal fracture of left calcaneus, subsequent encounter for fracture with malunion (subsequent encounter), S99.002S — Unspecified physeal fracture of left calcaneus, sequela (sequela)

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Fracture of lower limb (except hip), subsequent encounter).

+4697 more

Contextual Map

Every relationship of S99.002K 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
  • S92.0 — Fracture of calcaneus [Excludes2](via S99.0.-): “Physeal fracture of calcaneus (S99.0-)” · 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]
  • S99.0 — Physeal fracture of calcaneus [Sibling]
  • S99.00 — Unspecified physeal fracture of calcaneus [Sibling]
  • S99.001 — Unspecified physeal fracture of right calcaneus [Sibling]
  • S99.001A — Unspecified physeal fracture of right calcaneus, initial encounter for closed fracture [Sibling]
  • S99.001B — Unspecified physeal fracture of right calcaneus, initial encounter for open fracture [Sibling]
  • S99.001D — Unspecified physeal fracture of right calcaneus, subsequent encounter for fracture with routine healing [Sibling]
  • S99.001G — Unspecified physeal fracture of right calcaneus, subsequent encounter for fracture with delayed healing [Sibling]
  • and 32 more

Change history

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

Frequently Asked Questions (FAQ) & Clinical Guidance

Does S99.002K require a 7th character?

Yes. The appropriate 7th character is to be added to each code from subcategories S99.0.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S99.002K in its code family, with their registry titles.

  • S99.002 — Unspecified physeal fracture of left calcaneus
  • S99.002A — Unspecified physeal fracture of left calcaneus, initial encounter for closed fracture
  • S99.002B — Unspecified physeal fracture of left calcaneus, initial encounter for open fracture
  • S99.002D — Unspecified physeal fracture of left calcaneus, subsequent encounter for fracture with routine healing
  • S99.002G — Unspecified physeal fracture of left calcaneus, subsequent encounter for fracture with delayed healing
  • S99.002P — Unspecified physeal fracture of left calcaneus, subsequent encounter for fracture with malunion
  • S99.002S — Unspecified physeal fracture of left calcaneus, sequela
  • S99.009 — Unspecified physeal fracture of unspecified calcaneus
  • S99.009A — Unspecified physeal fracture of unspecified calcaneus, initial encounter for closed fracture
  • S99.009B — Unspecified physeal fracture of unspecified calcaneus, initial encounter for open fracture

View all codes in the S99 family