S28.1XXD ICD-10-CM Code: Traumatic amputation (partial) of part of thorax, except breast, subsequent encounter

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for S28.1XXD in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on S28.1XXD itself; “inherited from” names the category or block whose note applies here.

7th Character Guide

"The appropriate 7th character is to be added to each code from category S28"

• A — initial encounter
• D — subsequent encounter (this page’s code)
• S — sequela

How the encounter character is assigned. “Initial encounter” means the patient is receiving active treatment for the condition — it is not limited to the first visit, and a different or new provider giving active treatment still assigns it. “Subsequent encounter” covers care during the healing or recovery phase after active treatment. “Sequela” is for complications or conditions that arise as a direct result of the original condition.

ICD-10-CM Official Guidelines for Coding and Reporting, Section I.C.19.a (paraphrased by MedCoder).

Variant codes in this family

S28.1XXA, S28.1XXD, S28.1XXS

Character meanings are CMS's official 7th-character extensions for this family, as carried in each variant code's official description; variant codes are registry rows. The explanation of how the encounter character is assigned is MedCoder editorial, distinct from the official content above it.

Coder workflow for S28.1XXD

MedCoder structured workflow — derived from this code’s own official record

Before you code S28.1XXD

1. A 7th character is required in this family. Confirm the documented encounter: initial (active treatment), subsequent (healing or recovery phase), or sequela. This page’s code carries “D”. “Initial” means active treatment, not the first visit (Guidelines I.C.19.a).

   See the 7th Character Guide · Guide: 7th characters: initial, subsequent, sequela →

2. Confirm the injury type, the anatomical site at the most specific level documented, laterality where the family codes it, and the encounter for the 7th character. Each injury is coded separately unless the classification provides a combination code, and a superficial injury is not coded when a more severe injury of the same site is documented. Injury chapter guidelines (Guidelines I.C.19.b, I.C.19.b.1).

   Guide: 7th characters: initial, subsequent, sequela →

Choose the right path

1. Is the encounter phase documented — active treatment, healing or recovery, or a sequela?
   Yes → Assign the matching 7th character; the variant codes are in the 7th Character Guide.
   No → The code is invalid without its 7th character — query for the missing element.

Consider S28.1XXD. Then confirm the code is valid for the date of service in the Verify section.

Documentation check

The provider’s diagnostic statement

Codes are assigned from the provider’s documented diagnosis, not from clinical criteria, test values or a medication list (Guidelines I.A.19).

Anatomical site

At the most specific level the record states; a site the classification separates cannot be assumed from a procedure or a measurement.

Encounter type

Active treatment, healing or recovery phase, or sequela — the basis of the 7th character (Guidelines I.C.19.a).

External cause, place and activity

For the external cause codes reported with the injury or poisoning, where documented (Guidelines I.C.20.a).

Official instructions as workflow

• Excludes2 — not part of S28.1XXD(11 notes)

  Coding workflow: The conditions named in this note are not included in S28.1XXD. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareT17.5, T18.1, T17.8, T17.4, T63.4

  See the official tabular notes · Guidelines I.A.12.b

Coding decision scenarios

Pattern scenarios for this code’s structure — decision rules, not clinical cases

Every row is derived from this code’s own record — its title, tabular notes, 7th-character family and same-category siblings — with fixed MedCoder wording; nothing is inferred about a patient. The official notes and guideline text are in the sections each row links to, and they control.

Don’t confuse S28.1XXD with…

MedCoder analysis — pairs from this code’s official notes, distinctions written by MedCoder

The codes most likely to be picked instead of S28.1XXD — named in its own official notes, or sharing its laterality or encounter family — with what separates them and which documentation moves the case. Each links to the full comparison.

• S28.1XXA— Encounter relationship (Review)

  Same underlying diagnosis, different encounter phase.

  The same diagnosis at a different phase of care; one encounter takes one 7th character.

  What moves you there: Documentation of a initial encounter moves the case to S28.1XXA.

  Full comparison: S28.1XXD vs S28.1XXA →

• S28.1XXS— Encounter relationship (Review)

  Same underlying diagnosis, different encounter phase.

  The same diagnosis at a different phase of care; one encounter takes one 7th character.

  What moves you there: Documentation of a sequela moves the case to S28.1XXS.

  Full comparison: S28.1XXD vs S28.1XXS →

• T20— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of burns and corrosions adds T20; it is not part of this code and both may be reported when both are documented.

  Full comparison: S28.1XXD vs T20 →

• T32— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of burns and corrosions adds T32; it is not part of this code and both may be reported when both are documented.

  Full comparison: S28.1XXD vs T32 →

• T17.5— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of effects of foreign body in bronchus adds T17.5; it is not part of this code and both may be reported when both are documented.

  Full comparison: S28.1XXD vs T17.5 →

• T18.1— Excludes2 relationship (Informational)

  Distinct conditions — both may be reported.

  A distinct condition — both may be reported when both are documented.

  What moves you there: Documentation of effects of foreign body in esophagus adds T18.1; it is not part of this code and both may be reported when both are documented.

  Full comparison: S28.1XXD vs T18.1 →

Relationships are read from this code's own official notes, its laterality siblings and its encounter family; the wording of each distinction is MedCoder editorial, and the documentation named in each “what moves you there” line is the official note phrase or sibling title itself. Source: CMS ICD-10-CM tabular instructional notes; ICD-10-CM Official Guidelines, Section I.A.12.a.

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 in Claim Check.

Relationships & Classification

MedCoder structured relationships — computed from published CMS and AHRQ datasets

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

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):INJ052 — Amputation of other body parts, 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 injury, other encounter phase

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

S28.1XXA — Traumatic amputation (partial) of part of thorax, except breast, initial encounterCompare S28.1XXD vs S28.1XXA →, S28.1XXS — Traumatic amputation (partial) of part of thorax, except breast, sequela

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Amputation of other body parts, subsequent encounter).

S08.111D — Complete traumatic amputation of right ear, subsequent encounter, S08.112D — Complete traumatic amputation of left ear, subsequent encounter, S08.119D — Complete traumatic amputation of unspecified ear, subsequent encounter, S08.121D — Partial traumatic amputation of right ear, subsequent encounter, S08.122D — Partial traumatic amputation of left ear, subsequent encounter, S08.129D — Partial traumatic amputation of unspecified ear, subsequent encounter, S08.811D — Complete traumatic amputation of nose, subsequent encounter, S08.812D — Partial traumatic amputation of nose, subsequent encounter, S08.89XD — Traumatic amputation of other parts of head, subsequent encounter, S28.211D — Complete traumatic amputation of right breast, subsequent encounter, S28.212D — Complete traumatic amputation of left breast, subsequent encounter, S28.219D — Complete traumatic amputation of unspecified breast, subsequent encounter, S28.221D — Partial traumatic amputation of right breast, subsequent encounter, S28.222D — Partial traumatic amputation of left breast, subsequent encounter, S28.229D — Partial traumatic amputation of unspecified breast, subsequent encounter, S38.211D — Complete traumatic amputation of female external genital organs, subsequent encounter, S38.212D — Partial traumatic amputation of female external genital organs, subsequent encounter, S38.221D — Complete traumatic amputation of penis, subsequent encounter, S38.222D — Partial traumatic amputation of penis, subsequent encounter, S38.231D — Complete traumatic amputation of scrotum and testis, subsequent encounter, +2 more

Contextual Map

Every relationship of S28.1XXD 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]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S20-S29 — Injuries to the thorax[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Clinical classification (CCSR)

• INJ052 — Amputation of other body parts, subsequent encounter[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• DRG 949 — AFTERCARE WITH CC/MCC[MS-DRG]: “AFTERCARE WITH CC/MCC (MDC 23)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 950 — AFTERCARE WITHOUT CC/MCC[MS-DRG]: “AFTERCARE WITHOUT CC/MCC (MDC 23)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

• 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. 1,235 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Nearest codes (35)

• S28 — Crushing injury of thorax, and traumatic amputation of part of thorax[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S28.0 — Crushed chest[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S28.0XXA — Crushed chest, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S28.0XXD — Crushed chest, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S28.0XXS — Crushed chest, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S28.1 — Traumatic amputation (partial) of part of thorax, except breast[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S28.1XXA — Traumatic amputation (partial) of part of thorax, except breast, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S28.1XXS — Traumatic amputation (partial) of part of thorax, except breast, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 27 more

Change history

• FY2016 — In the code set at ICD-10-CM adoption [Change history]— CMS release files (code change ledger) · icd10cm-fy2016

Common coding questions

Sources for this page

Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.

Code, title, tabular notes and index terms Official source data

CMS/CDC ICD-10-CM FY2026 tabular list, index and tables, effective October 1, 2025 Release, file and checksum · Publisher’s page

Claim edits Official source data

CMS Definitions of Medicare Code Edits — v43.1 (April 2026) Release, file and checksum · Publisher’s page

Inpatient payment groups Official source data

CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43 Release, file and checksum · Publisher’s page

Change history and date-of-service validity Official source data

CMS ICD-10-CM release addenda, ingested release by release into the change ledger Release, file and checksum · Publisher’s page

Comparisons, relationships and the contextual map MedCoder structured relationship

Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears

Summary and FAQ answers MedCoder explanation

Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.

Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S28.1XXD in its code family, with their registry titles.

• S28.0XXA — Crushed chest, initial encounter
• S28.0XXD — Crushed chest, subsequent encounter
• S28.0XXS — Crushed chest, sequela
• S28.1 — Traumatic amputation (partial) of part of thorax, except breast
• S28.1XXA — Traumatic amputation (partial) of part of thorax, except breast, initial encounter
• S28.1XXS — Traumatic amputation (partial) of part of thorax, except breast, sequela
• S28.2 — Traumatic amputation of breast
• S28.21 — Complete traumatic amputation of breast
• S28.211 — Complete traumatic amputation of right breast
• S28.211A — Complete traumatic amputation of right breast, initial encounter

View all codes in the S28 family