T86.830 ICD-10-CM Code: Bone graft rejection

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for T86.830 in the official ICD-10-CM tabular list, quoted as published.

Source: CMS/CDC — ICD-10-CM Tabular ListRelease: FY2026Effective: October 1, 2025

Notes without a marker are published on T86.830 itself; “inherited from” names the category or block whose note applies here.

Coder workflow for T86.830

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

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).

The conditions the Use Additional Code note names

Reported with this code when documented; a conditional instruction (“if applicable”, “if known”) applies only when the record supports it.

Official instructions as workflow

• Excludes2 — not part of T86.830(22 notes)

  Coding workflow: The conditions named in this note are not included in T86.830. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareT84.3, Z93, Z43, Z44, R50.82, G97.0

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

• Use Additional Code — after identifying T86.830(7 notes)

  Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with T86.830 when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

  ReviewD89.81, C80.2, D47.Z1

  See the official tabular notes · Guidelines I.A.13

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.

Indexed Clinical Terms (3)

Official source data — entries quoted as published, in the Index’s own lookup phrasing

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code. These are alphabetic-index entries shown as the Index writes them — lookup phrasing, not necessarily the wording of a final diagnosis.

• Complication (s) (from) (of), graft (bypass) (patch), bone, rejection
• Complication (s) (from) (of), transplant, bone, rejection
• Rejection, transplant, bone

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 T86.830 with…

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

The codes most likely to be picked instead of T86.830 — 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.

• T86.839— Specificity relationship (Review)

  Overlapping diagnoses in the same category.

  Overlapping codes in the same category — the documentation decides which is the more specific fit.

  What moves you there: A record that documents no more than “Unspecified complication of bone graft” takes T86.839; specificity in the record moves it back here.

  Full comparison: T86.830 vs T86.839 →

• T84.3— 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 mechanical complications of bone graft adds T84.3; it is not part of this code and both may be reported when both are documented.

  Full comparison: T86.830 vs T84.3 →

• Z93— 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 artificial opening status adds Z93; it is not part of this code and both may be reported when both are documented.

  Full comparison: T86.830 vs Z93 →

• Z43— 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 closure of external stoma adds Z43; it is not part of this code and both may be reported when both are documented.

  Full comparison: T86.830 vs Z43 →

• Z44— 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 fitting and adjustment of external prosthetic device adds Z44; it is not part of this code and both may be reported when both are documented.

  Full comparison: T86.830 vs Z44 →

• 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 from local applications and irradiation adds T20; it is not part of this code and both may be reported when both are documented.

  Full comparison: T86.830 vs T20 →

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

• CC 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 T86.830 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 2 Excludes1 notes across 2 chapters: T88.7 — Unspecified adverse effect of drug or medicament (via T86.-), Z98.85 — Transplanted organ removal status (via T86.-).

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

Referenced by 9 Excludes2 notes across 2 chapters: D89 — Other disorders involving the immune mechanism, not elsewhere classified (via T86.-), T78 — Adverse effects, not elsewhere classified (via T86.-), T79 — Certain early complications of trauma, not elsewhere classified (via T86.-), T81 — Complications of procedures, not elsewhere classified (via T86.-), T82 — Complications of cardiac and vascular prosthetic devices, implants and grafts (via T86.-), T83 — Complications of genitourinary prosthetic devices, implants and grafts (via T86.-), T84 — Complications of internal orthopedic prosthetic devices, implants and grafts (via T86.-), T84.3 — Mechanical complication of other bone devices, implants and grafts (via T86.83.-), T85 — Complications of other internal prosthetic devices, implants and grafts (via T86.-).

These codes’ tabular lists name this diagnosis as distinct — both may be reported when both are documented.

Referenced by 4 Code First instructions across 2 chapters: C80.2 — Malignant neoplasm associated with transplanted organ (via T86.-), D47.Z1 — Post-transplant lymphoproliferative disorder (PTLD) (via T86.-), D89.81 — Graft-versus-host disease (via T86.-), D89.83 — Cytokine release syndrome (via T86.-).

Each of these codes carries a Code First note naming this condition — when that code is reported, THIS code is sequenced first, ahead of it.

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

FY2026 MS-DRG: CC — 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 19 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 3 MS-DRGs: DRG 919 (MDC 21), DRG 920 (MDC 21), DRG 921 (MDC 21).

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

Clinical classification (AHRQ CCSR):INJ036 — Complication of transplanted organs or tissue, 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 clinical process (MS-DRG)

Acts as CC — raises the severity of other admissions. CMS groups these diagnoses into one MS-DRG principal-diagnosis exclusion process — a CC/MCC on this list never raises severity when the principal diagnosis is also on it.

H95.811 — Postprocedural stenosis of right external ear canal, H95.812 — Postprocedural stenosis of left external ear canal, H95.813 — Postprocedural stenosis of external ear canal, bilateral, H95.819 — Postprocedural stenosis of unspecified external ear canal, H95.88 — Other intraoperative complications and disorders of the ear and mastoid process, not elsewhere classified, H95.89 — Other postprocedural complications and disorders of the ear and mastoid process, not elsewhere classified, I97.3 — Postprocedural hypertension, M96.89 — Other intraoperative and postprocedural complications and disorders of the musculoskeletal system, N98.1 — Hyperstimulation of ovaries, N98.2 — Complications of attempted introduction of fertilized ovum following in vitro fertilization, N98.3 — Complications of attempted introduction of embryo in embryo transfer, N98.8 — Other complications associated with artificial fertilization, N98.9 — Complication associated with artificial fertilization, unspecified, T86.5 — Complications of stem cell transplant, T86.831 — Bone graft failure, T86.832 — Bone graft infection, T86.838 — Other complications of bone graft, T86.839 — Unspecified complication of bone graft

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Complication of transplanted organs or tissue, initial encounter).

T86.810 — Lung transplant rejection, T86.811 — Lung transplant failure, T86.812 — Lung transplant infection, T86.818 — Other complications of lung transplant, T86.819 — Unspecified complication of lung transplant, T86.820 — Skin graft (allograft) rejection, T86.821 — Skin graft (allograft) (autograft) failure, T86.822 — Skin graft (allograft) (autograft) infection, T86.828 — Other complications of skin graft (allograft) (autograft), T86.829 — Unspecified complication of skin graft (allograft) (autograft), T86.831 — Bone graft failure, T86.832 — Bone graft infection, T86.838 — Other complications of bone graft, T86.839 — Unspecified complication of bone graft, T86.840 — Corneal transplant rejection, T86.8401 — Corneal transplant rejection, right eye, T86.8402 — Corneal transplant rejection, left eye, T86.8403 — Corneal transplant rejection, bilateral, T86.8409 — Corneal transplant rejection, unspecified eye, T86.841 — Corneal transplant failure, +76 more

Same Index main term, other category

The ICD-10-CM Index to Diseases and Injuries files this code under the main term “Rejection”; these codes share that main term but sit in a different category of the Tabular List.

F50.89 — Other specified eating disorder

Contextual Map

Every relationship of T86.830 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 T86.830 with these 14 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
• T80-T88 — Complications of surgical and medical care, not elsewhere classified[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes

• T88.7 — Unspecified adverse effect of drug or medicament[Excludes1](via T86.-): “specified adverse effects of drugs and medicaments (A00-R94 and T80-T88.6, T88.8)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• Z98.85 — Transplanted organ removal status[Excludes1](via T86.-): “encounter for removal of transplanted organ -code to complication of transplanted organ (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes (9)

• D89 — Other disorders involving the immune mechanism, not elsewhere classified[Excludes2](via T86.-): “transplant failure and rejection (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T78 — Adverse effects, not elsewhere classified[Excludes2](via T86.-): “complications of surgical and medical care NEC (T80-T88)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T79 — Certain early complications of trauma, not elsewhere classified[Excludes2](via T86.-): “complications occurring during or following medical procedures (T80-T88)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T81 — Complications of procedures, not elsewhere classified[Excludes2](via T86.-): “complications of transplanted organs and tissue (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T82 — Complications of cardiac and vascular prosthetic devices, implants and grafts[Excludes2](via T86.-): “failure and rejection of transplanted organs and tissue (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T83 — Complications of genitourinary prosthetic devices, implants and grafts[Excludes2](via T86.-): “failure and rejection of transplanted organs and tissue (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T84 — Complications of internal orthopedic prosthetic devices, implants and grafts[Excludes2](via T86.-): “failure and rejection of transplanted organs and tissues (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T84.3 — Mechanical complication of other bone devices, implants and grafts[Excludes2](via T86.83.-): “other complications of bone graft (T86.83-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• and 1 more

Referenced by Code First instructions

• C80.2 — Malignant neoplasm associated with transplanted organ[Code First](via T86.-): “complication of transplanted organ (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• D47.Z1 — Post-transplant lymphoproliferative disorder (PTLD)[Code First](via T86.-): “complications of transplanted organs and tissue (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• D89.81 — Graft-versus-host disease[Code First](via T86.-): “complications of transplanted organs and tissue (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• D89.83 — Cytokine release syndrome[Code First](via T86.-): “complications of transplanted organs and tissue (T86.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Clinical classification (CCSR)

• INJ036 — Complication of transplanted organs or tissue, initial encounter[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

MS-DRG Grouper

• CC — Complication or Comorbidity [MS-DRG severity]: “As a secondary diagnosis this code can raise the stay's MS-DRG severity tier (CC).”— CMS MS-DRG Definitions Manual (Appendix C) · FY2026
• DRG 919 — COMPLICATIONS OF TREATMENT WITH MCC[MS-DRG]: “COMPLICATIONS OF TREATMENT WITH MCC (MDC 21)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 920 — COMPLICATIONS OF TREATMENT WITH CC[MS-DRG]: “COMPLICATIONS OF TREATMENT WITH CC (MDC 21)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 921 — COMPLICATIONS OF TREATMENT WITHOUT CC/MCC[MS-DRG]: “COMPLICATIONS OF TREATMENT WITHOUT CC/MCC (MDC 21)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

MDC crossing

• MDC 21 — Injuries, Poisonings and Toxic Effects of Drugs[MDC crossing]: “Injuries, Poisonings and Toxic Effects of Drugs — 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. 32,029 same-MDC procedures group here; browse them on the MDC page.”— CMS MS-DRG Definitions Manual · FY2026

Index entries

• Complication (s) (from) (of), graft (bypass) (patch), bone, rejection[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Complication (s) (from) (of), transplant, bone, rejection[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026
• Rejection, transplant, bone[Index term]— CMS ICD-10-CM Index to Diseases and Injuries · icd10cm-fy2026

Nearest codes (40)

• T86 — Complications of transplanted organs and tissue[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T86.40 — Unspecified complication of liver transplant[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T86.41 — Liver transplant rejection[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T86.42 — Liver transplant failure[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T86.43 — Liver transplant infection[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T86.49 — Other complications of liver transplant[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T86.5 — Complications of stem cell transplant[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T86.8 — Complications of other transplanted organs and tissues[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

Relevant guides

• Transplant Complication or Transplant Status? T86 vs Z94, and CKD After a Kidney Transplant →

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

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 T86.830 in its code family, with their registry titles.

• T86.821 — Skin graft (allograft) (autograft) failure
• T86.822 — Skin graft (allograft) (autograft) infection
• T86.828 — Other complications of skin graft (allograft) (autograft)
• T86.829 — Unspecified complication of skin graft (allograft) (autograft)
• T86.83 — Complications of bone graft
• T86.831 — Bone graft failure
• T86.832 — Bone graft infection
• T86.838 — Other complications of bone graft
• T86.839 — Unspecified complication of bone graft
• T86.84 — Complications of corneal transplant

View all codes in the T86 family