T84.54XA ICD-10-CM Code: Infection and inflammatory reaction due to internal left knee prosthesis, initial encounter

Coding instructions

Official Tabular Instructional Notes: the inclusion, exclusion and sequencing notes published for T84.54XA in the official ICD-10-CM tabular list, quoted as published.

Notes without a marker are published on T84.54XA 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 T84"

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

T84.54XA, T84.54XD, T84.54XS

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 T84.54XA

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

Before you code T84.54XA

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 “A”. “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. Laterality is coded in this family. Confirm the side documented — right, left, or bilateral — and select the matching code (this page’s code: left). The unspecified-side code applies only when the record states no side. Laterality is assigned from the documented side; where a bilateral code exists and both sides are documented, it is used instead of two unilateral codes (Guidelines I.B.13).

   See the relationships section · Guide: Laterality coding →

3. T84.54XA’s title joins a condition with an associated condition or complication. Confirm each component is documented. Where the classification presumes the link through the “with” convention, only a provider statement that the conditions are unrelated defeats it. A combination code is assigned only when it fully identifies the documented conditions; a required second code for the stage, type or manifestation is still reported when the notes ask for it (Guidelines I.B.9, I.A.15).

   Guide: Combination codes →

Choose the right path

1. Is the side documented?
   Yes → Select the code for the documented side (or the bilateral code when both sides are documented and one exists).
   No → Use the unspecified-side code only when the record states no side; a query is the alternative.
2. 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 T84.54XA. Then work the Use Additional Code note, and 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).

Laterality

Right, left or bilateral as documented; unspecified only when the record states no side (Guidelines I.B.13).

Encounter type

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

The associated condition or complication

Whether the associated condition the title names is documented; the “with” convention presumes some links, and a provider statement that the conditions are unrelated defeats it (Guidelines I.A.15).

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 T84.54XA(23 notes)

  Coding workflow: The conditions named in this note are not included in T84.54XA. When the record documents both, both may be reported; the note is a boundary, not a prohibition.

  CompareT86, M96.6, Z93, Z43, Z44, R50.82

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

• Use Additional Code — after identifying T84.54XA(4 notes)

  Coding workflow: Check whether the documentation supports the additional code(s) the note names, and report them with T84.54XA when it does. Where the instruction is conditional (“if applicable”, “if known”), it applies only when the record documents the condition.

  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.

Don’t confuse T84.54XA with…

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

The codes most likely to be picked instead of T84.54XA — 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.

• T84.53XA— 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 right side moves the case to T84.53XA.

  Full comparison: T84.54XA vs T84.53XA →

• T84.54XD— 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 subsequent encounter moves the case to T84.54XD.

  Full comparison: T84.54XA vs T84.54XD →

• T84.54XS— 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 T84.54XS.

  Full comparison: T84.54XA vs T84.54XS →

• T86— 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 failure and rejection of transplanted organs and tissues adds T86; it is not part of this code and both may be reported when both are documented.

  Full comparison: T84.54XA vs T86 →

• M96.6— 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 bone following insertion of orthopedic implant, joint prosthesis or bone plate adds M96.6; it is not part of this code and both may be reported when both are documented.

  Full comparison: T84.54XA vs M96.6 →

• 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: T84.54XA vs Z93 →

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. Laterality is coded in this family. Confirm the documented side matches the code — the opposite-side siblings are in the relationships section. See the opposite-side sibling codes
3. 4 Use Additional Code instructions — report the named additional code(s) when the documentation supports them. See the Use Additional Code notes
4. 23 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

• 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 T84.54XA 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 5 Excludes1 notes across 2 chapters: T85.612 — Breakdown (mechanical) of permanent sutures (via T84.-), T85.622 — Displacement of permanent sutures (via T84.-), T85.692 — Other mechanical complication of permanent sutures (via T84.-), T88.7 — Unspecified adverse effect of drug or medicament (via T84.-), Z97 — Presence of other devices (via T84.-).

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

Referenced by 11 Excludes2 notes across 3 chapters: M00 — Pyogenic arthritis (via T84.5.-), M96 — Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified (via T84.-), M96.6 — Fracture of bone following insertion of orthopedic implant, joint prosthesis, or bone plate (via T84.-), T78 — Adverse effects, not elsewhere classified (via T84.-), T79 — Certain early complications of trauma, not elsewhere classified (via T84.-), T80.2 — Infections following infusion, transfusion and therapeutic injection (via T84.-), T81 — Complications of procedures, not elsewhere classified (via T84.-), T81.4 — Infection following a procedure (via T84.-), T81.59 — Other complications of foreign body accidentally left in body following procedure (via T84.-), T88 — Other complications of surgical and medical care, not elsewhere classified (via T84.-), Z96 — Presence of other functional implants (via T84.-).

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

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

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 262 clinically related codes on its CMS exclusion list.

Named in the grouper logic of 6 MS-DRGs: DRG 485 (MDC 08), DRG 486 (MDC 08), DRG 487 (MDC 08), DRG 559 (MDC 08), DRG 560 (MDC 08), DRG 561 (MDC 08).

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

Clinical classification (AHRQ CCSR):INJ035 — Complication of internal orthopedic device or implant, 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.

T84.410A — Breakdown (mechanical) of muscle and tendon graft, initial encounter, T84.418A — Breakdown (mechanical) of other internal orthopedic devices, implants and grafts, initial encounter, T84.420A — Displacement of muscle and tendon graft, initial encounter, T84.428A — Displacement of other internal orthopedic devices, implants and grafts, initial encounter, T84.490A — Other mechanical complication of muscle and tendon graft, initial encounter, T84.498A — Other mechanical complication of other internal orthopedic devices, implants and grafts, initial encounter, T84.50XA — Infection and inflammatory reaction due to unspecified internal joint prosthesis, initial encounter, T84.51XA — Infection and inflammatory reaction due to internal right hip prosthesis, initial encounter, T84.52XA — Infection and inflammatory reaction due to internal left hip prosthesis, initial encounter, T84.53XA — Infection and inflammatory reaction due to internal right knee prosthesis, initial encounter, T84.59XA — Infection and inflammatory reaction due to other internal joint prosthesis, initial encounter, T84.60XA — Infection and inflammatory reaction due to internal fixation device of unspecified site, initial encounter, T84.610A — Infection and inflammatory reaction due to internal fixation device of right humerus, initial encounter, T84.611A — Infection and inflammatory reaction due to internal fixation device of left humerus, initial encounter, T84.612A — Infection and inflammatory reaction due to internal fixation device of right radius, initial encounter, T84.613A — Infection and inflammatory reaction due to internal fixation device of left radius, initial encounter, T84.614A — Infection and inflammatory reaction due to internal fixation device of right ulna, initial encounter, T84.615A — Infection and inflammatory reaction due to internal fixation device of left ulna, initial encounter, T84.619A — Infection and inflammatory reaction due to internal fixation device of unspecified bone of arm, initial encounter, T84.620A — Infection and inflammatory reaction due to internal fixation device of right femur, initial encounter, +241 more

Same condition, opposite side

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

T84.53XA — Infection and inflammatory reaction due to internal right knee prosthesis, initial encounterCompare T84.54XA vs T84.53XA →

Same injury, other encounter phase

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

T84.54XD — Infection and inflammatory reaction due to internal left knee prosthesis, subsequent encounterCompare T84.54XA vs T84.54XD →, T84.54XS — Infection and inflammatory reaction due to internal left knee prosthesis, sequelaCompare T84.54XA vs T84.54XS →

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical category (Complication of internal orthopedic device or implant, initial encounter).

T84.320A — Displacement of electronic bone stimulator, initial encounter, T84.328A — Displacement of other bone devices, implants and grafts, initial encounter, T84.390A — Other mechanical complication of electronic bone stimulator, initial encounter, T84.398A — Other mechanical complication of other bone devices, implants and grafts, initial encounter, T84.428A — Displacement of other internal orthopedic devices, implants and grafts, initial encounter, T84.498A — Other mechanical complication of other internal orthopedic devices, implants and grafts, initial encounter, T84.50XA — Infection and inflammatory reaction due to unspecified internal joint prosthesis, initial encounter, T84.51XA — Infection and inflammatory reaction due to internal right hip prosthesis, initial encounter, T84.52XA — Infection and inflammatory reaction due to internal left hip prosthesis, initial encounter, T84.53XA — Infection and inflammatory reaction due to internal right knee prosthesis, initial encounter, T84.59XA — Infection and inflammatory reaction due to other internal joint prosthesis, initial encounter, T84.60XA — Infection and inflammatory reaction due to internal fixation device of unspecified site, initial encounter, T84.610A — Infection and inflammatory reaction due to internal fixation device of right humerus, initial encounter, T84.611A — Infection and inflammatory reaction due to internal fixation device of left humerus, initial encounter, T84.612A — Infection and inflammatory reaction due to internal fixation device of right radius, initial encounter, T84.613A — Infection and inflammatory reaction due to internal fixation device of left radius, initial encounter, T84.614A — Infection and inflammatory reaction due to internal fixation device of right ulna, initial encounter, T84.615A — Infection and inflammatory reaction due to internal fixation device of left ulna, initial encounter, T84.619A — Infection and inflammatory reaction due to internal fixation device of unspecified bone of arm, initial encounter, T84.620A — Infection and inflammatory reaction due to internal fixation device of right femur, initial encounter, +96 more

Contextual Map

Every relationship of T84.54XA 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 T84.54XA with these 13 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

• T85.612 — Breakdown (mechanical) of permanent sutures[Excludes1](via T84.-): “mechanical complication of permanent (wire) suture used in bone repair (T84.1-T84.2)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T85.622 — Displacement of permanent sutures[Excludes1](via T84.-): “mechanical complication of permanent (wire) suture used in bone repair (T84.1-T84.2)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T85.692 — Other mechanical complication of permanent sutures[Excludes1](via T84.-): “mechanical complication of permanent (wire) suture used in bone repair (T84.1-T84.2)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T88.7 — Unspecified adverse effect of drug or medicament[Excludes1](via T84.-): “specified adverse effects of drugs and medicaments (A00-R94 and T80-T88.6, T88.8)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• Z97 — Presence of other devices[Excludes1](via T84.-): “complications of internal prosthetic devices, implants and grafts (T82-T85)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026

Referenced by Excludes2 notes (11)

• M00 — Pyogenic arthritis[Excludes2](via T84.5.-): “infection and inflammatory reaction due to internal joint prosthesis (T84.5-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• M96 — Intraoperative and postprocedural complications and disorders of musculoskeletal system, not elsewhere classified[Excludes2](via T84.-): “complications of internal orthopedic prosthetic devices, implants and grafts (T84.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• M96.6 — Fracture of bone following insertion of orthopedic implant, joint prosthesis, or bone plate[Excludes2](via T84.-): “complication of internal orthopedic devices, implants or grafts (T84.-)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T78 — Adverse effects, not elsewhere classified[Excludes2](via T84.-): “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 T84.-): “complications occurring during or following medical procedures (T80-T88)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T80.2 — Infections following infusion, transfusion and therapeutic injection[Excludes2](via T84.-): “infections specified as due to prosthetic devices, implants and grafts (T82.6-T82.7, T83.5-T83.6, T84.5-T84.7, T85.7)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T81 — Complications of procedures, not elsewhere classified[Excludes2](via T84.-): “complication of prosthetic devices, implants and grafts (T82-T85)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• T81.4 — Infection following a procedure[Excludes2](via T84.-): “infection due to prosthetic devices, implants and grafts (T82.6-T82.7, T83.5-T83.6, T84.5-T84.7, T85.7)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• and 3 more

Clinical classification (CCSR)

• INJ035 — Complication of internal orthopedic device or implant, 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 485 — KNEE PROCEDURES WITH PRINCIPAL DIAGNOSIS OF INFECTION WITH MCC[MS-DRG]: “KNEE PROCEDURES WITH PRINCIPAL DIAGNOSIS OF INFECTION WITH MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 486 — KNEE PROCEDURES WITH PRINCIPAL DIAGNOSIS OF INFECTION WITH CC[MS-DRG]: “KNEE PROCEDURES WITH PRINCIPAL DIAGNOSIS OF INFECTION WITH CC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 487 — KNEE PROCEDURES WITH PRINCIPAL DIAGNOSIS OF INFECTION WITHOUT CC/MCC[MS-DRG]: “KNEE PROCEDURES WITH PRINCIPAL DIAGNOSIS OF INFECTION WITHOUT CC/MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 559 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC[MS-DRG]: “AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 560 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH CC[MS-DRG]: “AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH CC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• DRG 561 — AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT CC/MCC[MS-DRG]: “AFTERCARE, MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT CC/MCC (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026

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

Nearest codes (40)

• T84 — Complications of internal orthopedic prosthetic devices, implants and grafts[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T84.498D — Other mechanical complication of other internal orthopedic devices, implants and grafts, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T84.498S — Other mechanical complication of other internal orthopedic devices, implants and grafts, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T84.5 — Infection and inflammatory reaction due to internal joint prosthesis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T84.50 — Infection and inflammatory reaction due to unspecified internal joint prosthesis[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T84.50XA — Infection and inflammatory reaction due to unspecified internal joint prosthesis, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T84.50XD — Infection and inflammatory reaction due to unspecified internal joint prosthesis, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• T84.50XS — Infection and inflammatory reaction due to unspecified internal joint prosthesis, sequela[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

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 T84.54XA in its code family, with their registry titles.

• T84.53 — Infection and inflammatory reaction due to internal right knee prosthesis
• T84.53XA — Infection and inflammatory reaction due to internal right knee prosthesis, initial encounter
• T84.53XD — Infection and inflammatory reaction due to internal right knee prosthesis, subsequent encounter
• T84.53XS — Infection and inflammatory reaction due to internal right knee prosthesis, sequela
• T84.54 — Infection and inflammatory reaction due to internal left knee prosthesis
• T84.54XD — Infection and inflammatory reaction due to internal left knee prosthesis, subsequent encounter
• T84.54XS — Infection and inflammatory reaction due to internal left knee prosthesis, sequela
• T84.59 — Infection and inflammatory reaction due to other internal joint prosthesis
• T84.59XA — Infection and inflammatory reaction due to other internal joint prosthesis, initial encounter
• T84.59XD — Infection and inflammatory reaction due to other internal joint prosthesis, subsequent encounter

View all codes in the T84 family