X82.8XXA ICD-10-CM Code: Other intentional self-harm by crashing of motor vehicle, initial encounter

7th Character Guide

"The appropriate 7th character is to be added to each code from category X82"

• 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

X82.8XXA, X82.8XXD, X82.8XXS

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 X82.8XXA

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

Before you code X82.8XXA

1. “Other” (NEC) means the condition is specified in the record but no dedicated code captures it. Confirm the documented form is not one a sibling code names before settling on X82.8XXA; if the record states no specifics at all, the unspecified sibling applies instead. “Other” codes are for documented conditions the classification gives no specific code; “unspecified” codes are for records lacking the detail (Guidelines I.A.9.a, I.A.9.b).

   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 “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 →

3. An external cause code is reported in addition to the code for the injury or condition, never as the principal or first-listed diagnosis. Confirm the cause, intent, place of occurrence, activity and status where the record documents them, and assign the 7th character that matches the injury code. External cause coding guidelines (Guidelines I.C.20.a).

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 X82.8XXA. 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).

Encounter type

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

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 X82.8XXA with…

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

The codes most likely to be picked instead of X82.8XXA — 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.

• X82.8XXD— 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 X82.8XXD.

  Full comparison: X82.8XXA vs X82.8XXD →

• X82.8XXS— 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 X82.8XXS.

  Full comparison: X82.8XXA vs X82.8XXS →

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

• Principal-diagnosis restriction. External cause of morbidity codes (V, W, X and Y) describe the circumstance that caused an injury, not the condition treated. The Medicare Code Editor rejects them as a principal diagnosis; sequence the injury or condition first and report this code as secondary.

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 X82.8XXA 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 27 Excludes1 notes: W20 — Struck by thrown, projected or falling object (via X82.-), W20-W49 — Exposure to inanimate mechanical forces (W20-W49) (via X82.-), W21 — Striking against or struck by sports equipment (via X82.-), W22 — Striking against or struck by other objects (via X82.-), W23 — Caught, crushed, jammed or pinched in or between objects (via X82.-), W24 — Contact with lifting and transmission devices, not elsewhere classified (via X82.-), W25 — Contact with sharp glass (via X82.-), W26 — Contact with other sharp objects (via X82.-), W27 — Contact with nonpowered hand tool (via X82.-), W28 — Contact with powered lawn mower (via X82.-), W29 — Contact with other powered hand tools and household machinery (via X82.-), W30 — Contact with agricultural machinery (via X82.-), W31 — Contact with other and unspecified machinery (via X82.-), W32 — Accidental handgun discharge and malfunction (via X82.-), W33 — Accidental rifle, shotgun and larger firearm discharge and malfunction (via X82.-), W34 — Accidental discharge and malfunction from other and unspecified firearms and guns (via X82.-), W35 — Explosion and rupture of boiler (via X82.-), W36 — Explosion and rupture of gas cylinder (via X82.-), W37 — Explosion and rupture of pressurized tire, pipe or hose (via X82.-), W38 — Explosion and rupture of other specified pressurized devices (via X82.-), +7 more.

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

Clinical classification (AHRQ CCSR):EXT007 — External cause codes: motor vehicle traffic (MVT); initial encounter; EXT021 — External cause codes: intent of injury, self-harm; MBD012 — Suicidal ideation/attempt/intentional self-harm.

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 CMS-HCC risk category (V28)

CMS maps these diagnoses to the same Hierarchical Condition Category (Major Depression, Moderate or Severe, without Psychosis) for risk-adjusted payment.

X77.3XXA — Intentional self-harm by hot household appliances, initial encounter, X77.8XXA — Intentional self-harm by other hot objects, initial encounter, X77.9XXA — Intentional self-harm by unspecified hot objects, initial encounter, X78.0XXA — Intentional self-harm by sharp glass, initial encounter, X78.1XXA — Intentional self-harm by knife, initial encounter, X78.2XXA — Intentional self-harm by sword or dagger, initial encounter, X78.8XXA — Intentional self-harm by other sharp object, initial encounter, X78.9XXA — Intentional self-harm by unspecified sharp object, initial encounter, X79.XXXA — Intentional self-harm by blunt object, initial encounter, X80.XXXA — Intentional self-harm by jumping from a high place, initial encounter, X81.0XXA — Intentional self-harm by jumping or lying in front of motor vehicle, initial encounter, X81.1XXA — Intentional self-harm by jumping or lying in front of (subway) train, initial encounter, X81.8XXA — Intentional self-harm by jumping or lying in front of other moving object, initial encounter, X82.0XXA — Intentional collision of motor vehicle with other motor vehicle, initial encounter, X82.1XXA — Intentional collision of motor vehicle with train, initial encounter, X82.2XXA — Intentional collision of motor vehicle with tree, initial encounter, X83.0XXA — Intentional self-harm by crashing of aircraft, initial encounter, X83.1XXA — Intentional self-harm by electrocution, initial encounter, X83.2XXA — Intentional self-harm by exposure to extremes of cold, initial encounter, X83.8XXA — Intentional self-harm by other specified means, initial encounter, +350 more

Related risk categories

These categories interact through CMS's HCC hierarchy — one can suppress the other's risk-adjustment weight when both are present on a claim.

Schizophrenia, Psychosis, Except Schizophrenia, Personality Disorders; Anorexia/Bulimia Nervosa, Bipolar Disorders without Psychosis

Same clinical category (CCSR)

AHRQ's Clinical Classifications Software groups these diagnoses under the same clinical categories (External cause codes: motor vehicle traffic (MVT); initial encounter, External cause codes: intent of injury, self-harm, Suicidal ideation/attempt/intentional self-harm).

+838 more

Contextual Map

Every relationship of X82.8XXA 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 X82.8XXA with these 8 related codes in Claim Check

Hierarchy

• V00-Y99 — Chapter 20: External Causes of Morbidity (V00-Y99) (V00-Y99)[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• X71-X83 — Intentional self-harm[Hierarchy]— CMS ICD-10-CM tabular structure · icd10cm-fy2026

Referenced by Excludes1 notes (27)

• W20 — Struck by thrown, projected or falling object[Excludes1](via X82.-): “intentional self-harm (X71-X83)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• W20-W49 — Exposure to inanimate mechanical forces (W20-W49)[Excludes1](via X82.-): “intentional self-harm (X71-X83)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• W21 — Striking against or struck by sports equipment[Excludes1](via X82.-): “intentional self-harm (X71-X83)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• W22 — Striking against or struck by other objects[Excludes1](via X82.-): “intentional self-harm (X71-X83)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• W23 — Caught, crushed, jammed or pinched in or between objects[Excludes1](via X82.-): “intentional self-harm (X71-X83)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• W24 — Contact with lifting and transmission devices, not elsewhere classified[Excludes1](via X82.-): “intentional self-harm (X71-X83)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• W25 — Contact with sharp glass[Excludes1](via X82.-): “intentional self-harm (X71-X83)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• W26 — Contact with other sharp objects[Excludes1](via X82.-): “intentional self-harm (X71-X83)”— CMS ICD-10-CM tabular instructional notes · icd10cm-fy2026
• and 19 more

Clinical classification (CCSR)

• EXT007 — External cause codes: motor vehicle traffic (MVT); initial encounter[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)
• EXT021 — External cause codes: intent of injury, self-harm[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)
• MBD012 — Suicidal ideation/attempt/intentional self-harm[CCSR]— AHRQ CCSR for ICD-10-CM Diagnoses (HCUP)

Risk adjustment (CMS-HCC)

• HCC 155 — Major Depression, Moderate or Severe, without Psychosis [CMS-HCC]— CMS-HCC V28 · 2026

Nearest codes (16)

• X82 — Intentional self-harm by crashing of motor vehicle[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• X82.0 — Intentional collision of motor vehicle with other motor vehicle[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• X82.0XXA — Intentional collision of motor vehicle with other motor vehicle, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• X82.0XXD — Intentional collision of motor vehicle with other motor vehicle, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• X82.0XXS — Intentional collision of motor vehicle with other motor vehicle, sequela[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• X82.1 — Intentional collision of motor vehicle with train[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• X82.1XXA — Intentional collision of motor vehicle with train, initial encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• X82.1XXD — Intentional collision of motor vehicle with train, subsequent encounter[Sibling]— CMS ICD-10-CM tabular structure · icd10cm-fy2026
• and 8 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

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 X82.8XXA in its code family, with their registry titles.

• X82.1XXA — Intentional collision of motor vehicle with train, initial encounter
• X82.1XXD — Intentional collision of motor vehicle with train, subsequent encounter
• X82.1XXS — Intentional collision of motor vehicle with train, sequela
• X82.2 — Intentional collision of motor vehicle with tree
• X82.2XXA — Intentional collision of motor vehicle with tree, initial encounter
• X82.2XXD — Intentional collision of motor vehicle with tree, subsequent encounter
• X82.2XXS — Intentional collision of motor vehicle with tree, sequela
• X82.8 — Other intentional self-harm by crashing of motor vehicle
• X82.8XXD — Other intentional self-harm by crashing of motor vehicle, subsequent encounter
• X82.8XXS — Other intentional self-harm by crashing of motor vehicle, sequela

View all codes in the X82 family