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S50.86 ICD-10-CM Code: Insect bite (nonvenomous) of forearm

Billing Status: NO. This is a clinician non-billable / parent hierarchy grouping in the ICD-10-CM system.

Official Registry Overview & Definition

Insect bite (nonvenomous) of forearm is a non-billable ICD-10-CM category code (S50.86). A more specific billable subcode must be selected for claims submission.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for S50.86 in the official ICD-10-CM tabular list.

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Frequently Compared Codes

The official Excludes notes on S50.86 name these codes. Each comparison page covers when the two can — or must not — be reported together.

Change history

No changes recorded for this code — unchanged since the FY2016 baseline of the change ledger.

Verify Before Coding

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Contextual Map

Every relationship of S50.86 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

Hierarchy

  • S00-T88 — Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) (S00-T88) [Hierarchy]

Referenced by Excludes1 notes

  • S51.85 — Open bite of forearm [Excludes1]: “superficial bite of forearm (S50.86, S50.87)” · check together

Referenced by Excludes2 notes (11)

  • S40 — Superficial injury of shoulder and upper arm [Excludes2](via S50.-): “injuries of elbow (S50-S59)” · check together
  • S40-S49 — Injuries to the shoulder and upper arm (S40-S49) [Excludes2](via S50.-): “injuries of elbow (S50-S59)” · check together
  • S41 — Open wound of shoulder and upper arm [Excludes2](via S50.-): “injuries of elbow (S50-S59)” · check together
  • S42 — Fracture of shoulder and upper arm [Excludes2](via S50.-): “injuries of elbow (S50-S59)” · check together
  • S43 — Dislocation and sprain of joints and ligaments of shoulder girdle [Excludes2](via S50.-): “injuries of elbow (S50-S59)” · check together
  • S44 — Injury of nerves at shoulder and upper arm level [Excludes2](via S50.-): “injuries of elbow (S50-S59)” · check together
  • S45 — Injury of blood vessels at shoulder and upper arm level [Excludes2](via S50.-): “injuries of elbow (S50-S59)” · check together
  • S46 — Injury of muscle, fascia and tendon at shoulder and upper arm level [Excludes2](via S50.-): “injuries of elbow (S50-S59)” · check together
  • and 3 more

Nearest codes (40)

  • S50 — Superficial injury of elbow and forearm [Sibling]
  • S50.842A — External constriction of left forearm, initial encounter [Sibling]
  • S50.842D — External constriction of left forearm, subsequent encounter [Sibling]
  • S50.842S — External constriction of left forearm, sequela [Sibling]
  • S50.849 — External constriction of unspecified forearm [Sibling]
  • S50.849A — External constriction of unspecified forearm, initial encounter [Sibling]
  • S50.849D — External constriction of unspecified forearm, subsequent encounter [Sibling]
  • S50.849S — External constriction of unspecified forearm, sequela [Sibling]
  • and 32 more

Referenced by Other Codes

Official ICD-10-CM tabular notes on other codes that name S50.86 or its code family.

1 Excludes1 notes: S51.85.

11 Excludes2 notes: S40 (via S50.-), S40-S49 (via S50.-), S41 (via S50.-), S42 (via S50.-), S43 (via S50.-), S44 (via S50.-), S45 (via S50.-), S46 (via S50.-), S47 (via S50.-), S48 (via S50.-) and 1 more.

Frequently Asked Questions (FAQ) & Clinical Guidance

Can S50.86 be billed directly?

No. S50.86 (Insect bite (nonvenomous) of forearm) is a non-billable ICD-10-CM category code. A more specific billable subcode must be selected based on clinical documentation.

Does S50.86 require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category S50.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to S50.86 in its code family, with their registry titles.

  • S50.852S — Superficial foreign body of left forearm, sequela
  • S50.859 — Superficial foreign body of unspecified forearm
  • S50.859A — Superficial foreign body of unspecified forearm, initial encounter
  • S50.859D — Superficial foreign body of unspecified forearm, subsequent encounter
  • S50.859S — Superficial foreign body of unspecified forearm, sequela
  • S50.861 — Insect bite (nonvenomous) of right forearm
  • S50.861A — Insect bite (nonvenomous) of right forearm, initial encounter
  • S50.861D — Insect bite (nonvenomous) of right forearm, subsequent encounter
  • S50.861S — Insect bite (nonvenomous) of right forearm, sequela
  • S50.862 — Insect bite (nonvenomous) of left forearm

View all codes in the S50 family