S72.146B ICD-10-CM Code: Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type I or II

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for S72.146B in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on S72.146B itself; “inherited from” names the category or block whose note applies here.

7th Character Guide

"The appropriate 7th character is to be added to all codes from category S72"

• A — initial encounter for closed fracture
• B — initial encounter for open fracture type I or II (this page’s code)
• C — initial encounter for open fracture type IIIA, IIIB, or IIIC
• D — subsequent encounter for closed fracture with routine healing
• E — subsequent encounter for open fracture type I or II with routine healing
• F — subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
• G — subsequent encounter for closed fracture with delayed healing
• H — subsequent encounter for open fracture type I or II with delayed healing
• J — subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing
• K — subsequent encounter for closed fracture with nonunion
• M — subsequent encounter for open fracture type I or II with nonunion
• N — subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion
• P — subsequent encounter for closed fracture with malunion
• Q — subsequent encounter for open fracture type I or II with malunion
• R — subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
• 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

S72.146A, S72.146B, S72.146C, S72.146D, S72.146E, S72.146F, S72.146G, S72.146H, S72.146J, S72.146K, S72.146M, S72.146N, S72.146P, S72.146Q, S72.146R, S72.146S

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 S72.146B

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

Before you code S72.146B

1. Unspecified does not mean incorrect. When the record gives no greater specificity, S72.146B may be the appropriate code. Check the record for detail that supports a more specific sibling — in this subcategory the siblings differ by open versus closed, displaced versus nondisplaced. An unspecified code is for records that do not provide the detail a more specific code needs; a query, not an assumption, is the route to specificity (Guidelines I.A.9.b, I.B.18).

   ReviewS72.145B

   See the relationships section · Guide: Other vs unspecified (NEC vs NOS) →

2. 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 “B”. “Initial” means active treatment, not the first visit (Guidelines I.C.19.a).

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

3. 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. A fracture not documented as open or closed is coded as closed; one not documented as displaced or nondisplaced is coded as displaced. Injury chapter guidelines (Guidelines I.C.19.b, I.C.19.b.1, I.C.19.c).

   Guide: Traumatic vs pathological vs stress fracture →

4. Check the Excludes1 note: if the documentation supports a condition named there, do not simply proceed with S72.146B. Excludes1 conditions are not reported together with this code unless the record shows they are unrelated (Guidelines I.A.12.a).

   See the official tabular notes

Choose the right path

1. Does the record document the detail a more specific sibling code needs?
   Yes → Review the specific siblings in this subcategory.
   No → Continue — S72.146B is appropriate when the documentation goes no further.

   ReviewS72.145B

2. Does the documentation support a condition named in S72.146B’s Excludes1 note?
   Yes → Do not simply proceed: review the excluded code. Both are reported only when the record shows the two conditions are unrelated.
   No → Continue.

   ReviewS78

3. 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 S72.146B. 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).

Open or closed; displaced or nondisplaced

Defaults apply when the record is silent: closed, and displaced (Guidelines I.C.19.c).

External cause, place and activity

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

Any detail beyond this code’s title

What the record states that a more specific sibling code would capture — or its absence, which itself supports the unspecified code.

Official instructions as workflow

• Excludes1 — check before selecting S72.146B(1 note)

  Coding workflow: If the documentation supports a condition named in this note, do not simply proceed with S72.146B: the two are not reported together. The one exception is when the record shows the two conditions are unrelated to each other.

  CompareS78

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

• Excludes2 — not part of S72.146B(7 notes)

  Coding workflow: The conditions named in this note are not included in S72.146B. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareS82, S92, M97.0, T63.0, 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.

Official Coding Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Official source data — quoted verbatim from the CMS/NCHS Official Guidelines

Verbatim excerpts from the ICD-10-CM Official Guidelines for Coding and Reporting (CMS/NCHS) that govern this code.

Don’t confuse S72.146B with…

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

The codes most likely to be picked instead of S72.146B — 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.

• S78— Excludes1 conflict (Conflict)

  Not coded here — these two are mutually exclusive.

  Not reported together with this code, except where the two conditions are documented as unrelated.

  What moves you there: Documentation of traumatic amputation of hip and thigh moves the case to S78; the two are not reported together unless documented as unrelated.

  Full comparison: S72.146B vs S78 →

• S72.145B— Laterality relationship (Review)

  Same condition; these differ only in which side is documented.

  The same condition on the other side; the documented side decides, and a bilateral code, where one exists, replaces the pair when both sides are documented.

  What moves you there: A documented left side moves the case to S72.145B.

  Full comparison: S72.146B vs S72.145B →

• S72.146A— 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 for closed fracture moves the case to S72.146A.

  Full comparison: S72.146B vs S72.146A →

• S72.146C— 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 or IIIC moves the case to S72.146C.

  Full comparison: S72.146B vs S72.146C →

• S82— 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 fracture of lower leg and ankle adds S82; it is not part of this code and both may be reported when both are documented.

  Full comparison: S72.146B vs S82 →

• S92— 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 fracture of foot adds S92; it is not part of this code and both may be reported when both are documented.

  Full comparison: S72.146B vs S92 →

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.

Decision Points

The directives on this code's own record, as a pre-claim checklist.

1. A 7th character applies in this family. Confirm the documented encounter matches the character assigned. See the official 7th-character definitions and this code’s variants
2. 1 Excludes1 entry — codes named there are generally not reported together with this code (Guidelines I.A.12.a). See the Excludes1 notes
3. 7 Excludes2 entries — those conditions are not part of this code and may be reported additionally when documented. See the Excludes2 notes

Checklist rows are derived from this code's own official directives; the wording of each check is MedCoder editorial. The official notes themselves are in the sections each row links to.

Verify Before Coding

• MCC as a secondary diagnosis (FY2026). Can raise the stay's MS-DRG severity tier.

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

Other codes that name S72.146B 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.

Referenced by 3 Excludes1 notes across 2 chapters: M84.3 — Stress fracture (via S72.-), M84.4 — Pathological fracture, not elsewhere classified (via S72.-), S71 — Open wound of hip and thigh (via S72.-).

These codes’ tabular lists mark this diagnosis as mutually exclusive — not reported together unless the conditions are documented as unrelated.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

MCC — Major Complication or Comorbidity. Reported as a secondary diagnosis, this code raises the stay's MS-DRG severity tier — except when the principal diagnosis is one of 814 clinically related codes on its CMS exclusion list. Does not count toward severity when the stay groups to DRGs 957-959 (Other O.R. Procedures for Multiple Significant Trauma); DRGs 963-965 (Other Multiple Significant Trauma).

Named in the grouper logic of 9 MS-DRGs: DRG 521 (MDC 08), DRG 522 (MDC 08), DRG 535 (MDC 08), DRG 536 (MDC 08), DRG 791 (MDC 15), DRG 793 (MDC 15), DRG 963 (MDC 24), DRG 964 (MDC 24), DRG 965 (MDC 24).

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

Clinical classification (AHRQ CCSR):INJ006 — Fracture of the neck of the femur (hip), initial 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.

S72.144B — Nondisplaced intertrochanteric fracture of right femur, initial encounter for open fracture type I or II (right)Compare S72.146B vs S72.144B →, S72.145B — Nondisplaced intertrochanteric fracture of left femur, initial encounter for open fracture type I or II (left)Compare S72.146B vs S72.145B →

Same injury, other encounter phase

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

S72.146A — Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for closed fractureCompare S72.146B vs S72.146A →, S72.146C — Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.146D — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for closed fracture with routine healing, S72.146E — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II with routine healing, S72.146F — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing, S72.146G — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for closed fracture with delayed healing, S72.146H — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II with delayed healing, S72.146J — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing, S72.146K — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for closed fracture with nonunion, S72.146M — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II with nonunion, S72.146N — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion, S72.146P — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for closed fracture with malunion, S72.146Q — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II with malunion, S72.146R — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion, S72.146S — Nondisplaced intertrochanteric fracture of unspecified femur, sequela

Same CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Hip Fracture/Dislocation) for risk-adjusted payment.

S72.143A — Displaced intertrochanteric fracture of unspecified femur, initial encounter for closed fracture, S72.143B — Displaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type I or II, S72.143C — Displaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.144A — Nondisplaced intertrochanteric fracture of right femur, initial encounter for closed fracture, S72.144B — Nondisplaced intertrochanteric fracture of right femur, initial encounter for open fracture type I or II, S72.144C — Nondisplaced intertrochanteric fracture of right femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.145A — Nondisplaced intertrochanteric fracture of left femur, initial encounter for closed fracture, S72.145B — Nondisplaced intertrochanteric fracture of left femur, initial encounter for open fracture type I or II, S72.145C — Nondisplaced intertrochanteric fracture of left femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.146A — Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for closed fracture, S72.146C — Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.21XA — Displaced subtrochanteric fracture of right femur, initial encounter for closed fracture, S72.21XB — Displaced subtrochanteric fracture of right femur, initial encounter for open fracture type I or II, S72.21XC — Displaced subtrochanteric fracture of right femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.22XA — Displaced subtrochanteric fracture of left femur, initial encounter for closed fracture, S72.22XB — Displaced subtrochanteric fracture of left femur, initial encounter for open fracture type I or II, S72.22XC — Displaced subtrochanteric fracture of left femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.23XA — Displaced subtrochanteric fracture of unspecified femur, initial encounter for closed fracture, S72.23XB — Displaced subtrochanteric fracture of unspecified femur, initial encounter for open fracture type I or II, S72.23XC — Displaced subtrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, +708 more

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Fracture of the neck of the femur (hip), initial encounter).

S72.143A — Displaced intertrochanteric fracture of unspecified femur, initial encounter for closed fracture, S72.143B — Displaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type I or II, S72.143C — Displaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.144A — Nondisplaced intertrochanteric fracture of right femur, initial encounter for closed fracture, S72.144B — Nondisplaced intertrochanteric fracture of right femur, initial encounter for open fracture type I or II, S72.144C — Nondisplaced intertrochanteric fracture of right femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.145A — Nondisplaced intertrochanteric fracture of left femur, initial encounter for closed fracture, S72.145B — Nondisplaced intertrochanteric fracture of left femur, initial encounter for open fracture type I or II, S72.145C — Nondisplaced intertrochanteric fracture of left femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.146A — Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for closed fracture, S72.146C — Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.21XA — Displaced subtrochanteric fracture of right femur, initial encounter for closed fracture, S72.21XB — Displaced subtrochanteric fracture of right femur, initial encounter for open fracture type I or II, S72.21XC — Displaced subtrochanteric fracture of right femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.22XA — Displaced subtrochanteric fracture of left femur, initial encounter for closed fracture, S72.22XB — Displaced subtrochanteric fracture of left femur, initial encounter for open fracture type I or II, S72.22XC — Displaced subtrochanteric fracture of left femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, S72.23XA — Displaced subtrochanteric fracture of unspecified femur, initial encounter for closed fracture, S72.23XB — Displaced subtrochanteric fracture of unspecified femur, initial encounter for open fracture type I or II, S72.23XC — Displaced subtrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC, +188 more

Lab tests where this diagnosis supports Medicare coverage (NCD)

Medicare's National Coverage Determination (NCD) program lists this diagnosis as medical justification for these lab tests.

Partial Thromboplastin Time (PTT) Test, Prothrombin Time Test and INR (PT/INR)

Contextual Map

Every relationship of S72.146B 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.

Run S72.146B with these 3 related codes in Claim Check

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
• S70-S79 — Injuries to the hip and thigh[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes

• M84.3 — Stress fracture[Excludes1](via S72.-): “traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• M84.4 — Pathological fracture, not elsewhere classified[Excludes1](via S72.-): “traumatic fracture (S12.-, S22.-, S32.-, S42.-, S52.-, S62.-, S72.-, S82.-, S92.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• S71 — Open wound of hip and thigh[Excludes1](via S72.-): “open fracture of hip and thigh (S72.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• INJ006 — Fracture of the neck of the femur (hip), initial encounter[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

Risk adjustment (CMS-HCC)

• HCC 402 — Hip Fracture/Dislocation [CMS-HCC]— CMS-HCC V28 · 2026

MS-DRG Grouper (9)

• MCC — Major Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (MCC). Not counted when the stay groups to DRGs 957-959 (Other O.R. Procedures for Multiple Significant Trauma); DRGs 963-965 (Other Multiple Significant Trauma).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2026
• DRG 521 — HIP REPLACEMENT WITH PRINCIPAL DIAGNOSIS OF HIP FRACTURE WITH MCC[MS-DRG]: “HIP REPLACEMENT WITH PRINCIPAL DIAGNOSIS OF HIP FRACTURE WITH MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 522 — HIP REPLACEMENT WITH PRINCIPAL DIAGNOSIS OF HIP FRACTURE WITHOUT MCC[MS-DRG]: “HIP REPLACEMENT WITH PRINCIPAL DIAGNOSIS OF HIP FRACTURE WITHOUT MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 535 — FRACTURES OF HIP AND PELVIS WITH MCC[MS-DRG]: “FRACTURES OF HIP AND PELVIS WITH MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 536 — FRACTURES OF HIP AND PELVIS WITHOUT MCC[MS-DRG]: “FRACTURES OF HIP AND PELVIS WITHOUT MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 791 — PREMATURITY WITH MAJOR PROBLEMS[MS-DRG]: “PREMATURITY WITH MAJOR PROBLEMS (MDC 15)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 793 — FULL TERM NEONATE WITH MAJOR PROBLEMS[MS-DRG]: “FULL TERM NEONATE WITH MAJOR PROBLEMS (MDC 15)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 963 — OTHER MULTIPLE SIGNIFICANT TRAUMA WITH MCC[MS-DRG]: “OTHER MULTIPLE SIGNIFICANT TRAUMA WITH MCC (MDC 24)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• and 2 more

MDC crossing

• MDC 08 — Diseases and Disorders of the Musculoskeletal System and Connective Tissue[MDC crossing]: “Diseases and Disorders of the Musculoskeletal System and Connective Tissue — 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. 18,508 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026
• MDC 15 — Newborns and Other Neonates with Conditions Originating in Perinatal Period[MDC crossing]: “Newborns and Other Neonates with Conditions Originating in Perinatal Period — 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.”— CMS MS-DRG Definitions Manual · FY2026

Nearest codes (40)

• S72 — Fracture of femur[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S72.144S — Nondisplaced intertrochanteric fracture of right femur, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S72.145 — Nondisplaced intertrochanteric fracture of left femur[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S72.145A — Nondisplaced intertrochanteric fracture of left femur, initial encounter for closed fracture[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S72.145B — Nondisplaced intertrochanteric fracture of left femur, initial encounter for open fracture type I or II[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S72.145C — Nondisplaced intertrochanteric fracture of left femur, initial encounter for open fracture type IIIA, IIIB, or IIIC[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S72.145D — Nondisplaced intertrochanteric fracture of left femur, subsequent encounter for closed fracture with routine healing[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• S72.145E — Nondisplaced intertrochanteric fracture of left femur, subsequent encounter for open fracture type I or II with routine healing[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 32 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

Coding guidelines Official source data

ICD-10-CM Official Guidelines for Coding and Reporting (FY2026), quoted by section 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

Risk adjustment Official source data

2026 Mid-Year Final ICD-10 Mappings + Model Software (cms.gov/files/zip/2026-midyear-final-icd-10-mappings.zip, 2026-midyear-final-model-software.zip) — CMS-HCC V28, PY2026 mid-year final release 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 S72.146B in its code family, with their registry titles.

• S72.145Q — Nondisplaced intertrochanteric fracture of left femur, subsequent encounter for open fracture type I or II with malunion
• S72.145R — Nondisplaced intertrochanteric fracture of left femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion
• S72.145S — Nondisplaced intertrochanteric fracture of left femur, sequela
• S72.146 — Nondisplaced intertrochanteric fracture of unspecified femur
• S72.146A — Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for closed fracture
• S72.146C — Nondisplaced intertrochanteric fracture of unspecified femur, initial encounter for open fracture type IIIA, IIIB, or IIIC
• S72.146D — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for closed fracture with routine healing
• S72.146E — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type I or II with routine healing
• S72.146F — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing
• S72.146G — Nondisplaced intertrochanteric fracture of unspecified femur, subsequent encounter for closed fracture with delayed healing

View all codes in the S72 family