ICD-10 Code S62.601B: Unspecified finger open fracture

Key takeaways

S62.601B is the ICD-10-CM code for an unspecified finger fracture at the initial encounter for a type I or II open fracture.

The “B” 7th character confirms this is the first active treatment visit for an open fracture, per ICD-10-CM Official Guidelines Section I.C.19.a.

S62.601B carries unspecified laterality – document the affected hand where clinically possible to support a more specific code.

Pabau’s claims management software links S62.601B directly to procedure codes at the point of billing, reducing open-fracture claim errors.

ICD-10 Code S62.601B is the billable ICD-10-CM code for an unspecified fracture of an unspecified finger. It marks the initial encounter for a type I or II open fracture. It applies when the note confirms an open finger fracture but names neither the digit nor the hand.

This reference covers the code’s full description and a character-by-character breakdown. It also sets out how S62.601B compares to adjacent codes and when it applies clinically. The last two sections cover the CPT pairings and what the encounter note must contain.

ICD-10 Code S62.601B: Full description and definition

ICD-10 Code S62.601B is a billable, specific ICD-10-CM diagnosis code. Its official full description, per the CDC/NCHS ICD-10-CM web tool, is:

Unspecified fracture of unspecified finger, initial encounter for open fracture type I or II.

This code sits at the intersection of two “unspecified” qualifiers, finger and laterality. Use it only when the documentation genuinely cannot identify the specific digit or the hand involved. Coders in physical therapy and orthopedic settings usually have imaging reports on hand that narrow the code further.

Code breakdown: Decoding S62.601B character by character

Every character in S62.601B carries a specific clinical meaning. Understanding the structure prevents coding errors at each position.

One common mistake is conflating the S62.6 “finger” subcategory with metacarpal fractures, which live in S62.2-S62.3. Finger fractures involve the phalanges. Metacarpal fractures involve the bones of the hand proper, proximal to the fingers. The wrong subcategory produces a structurally invalid claim.

What the “B” 7th character means: Initial encounter for open fracture

The 7th character is the most consequential position in any fracture code. For S62.601B, the “B” specifically means the patient is presenting for the first active treatment of a type I or II open fracture.

Active treatment includes any visit where the provider is managing the injury, not merely monitoring a healing fracture.

The full set of 7th character options for S62.601 is shown below. Each maps to a distinct clinical situation, and the wrong selection is a frequent cause of fracture claim denials.

The Gustilo classification is what separates “B” from the other open-fracture suffixes. A type I open fracture has a wound under 1 cm, minimal soft-tissue damage, and low contamination. A type II open fracture has a wound over 1 cm and moderate soft-tissue damage, without extensive periosteal stripping.

The note must record the wound size and the soft-tissue findings to support the “B” suffix. Without them, a payer may downcode the claim to the closed-fracture equivalent.

The “B” suffix applies only to the initial encounter. If the patient returns for follow-up and the fracture is healing routinely, the correct code switches to S62.601D.

Using “B” on a second or third visit is a common error flagged during HIPAA compliance audits. A later encounter for delayed union at a different site would code, for example, to S52.262K.

S62.601B vs related finger and hand fracture codes

Selecting the right code from the S62 block requires understanding the hierarchy. The table below contrasts S62.601B with its most commonly confused neighbors. That includes the closed-fracture equivalent, the higher-severity open variant, and adjacent metacarpal codes.

The distinction between S62.601B and S62.602B carries the most financial weight. Type III open fractures involve extensive soft-tissue loss, periosteal stripping, or vascular compromise.

Billing one of those under S62.601B understates injury severity, and reimbursement then falls short of the surgical complexity involved. Hand reconstruction teams meet this distinction often.

For a broader view of finger and hand fracture coding, the AAPC Codify lookup filters the whole S62 range by clinical description.

Clinical scenario: When to use ICD-10 Code S62.601B

Use ICD-10 Code S62.601B when all four conditions below are present simultaneously. If any one is absent, a different code is correct.

1. Open fracture: The skin overlying the fracture site has been breached. The note must document the wound and confirm it communicates with the fracture.
2. Gustilo type I or II: The provider has assessed wound size and soft-tissue damage. Type I means a wound under 1 cm with minimal contamination. Type II means a wound over 1 cm with moderate damage. If the wound is more severe, use S62.602B instead.
3. Initial encounter: This is the first visit at which active management of the fracture occurs. A transfer from a facility that only identified the fracture can still qualify as an initial encounter, per the ICD-10-CM Official Guidelines.
4. Unspecified finger: The documentation does not identify a specific digit, or the digit is genuinely indeterminate. If the chart names a specific finger, a more specific code from S62.61-S62.69 applies.

A typical S62.601B scenario runs like this. A patient arrives at urgent care after a saw injury at work, with a 1.5 cm wound and moderate soft-tissue involvement. The X-ray confirms a fracture, but crushed tissue crosses several fingers and no single digit can be isolated at the first visit.

The visit involves irrigation, splinting, and an antibiotic prescription, so it counts as active treatment. S62.601B is correct here, paired with an external cause code such as W49.09XD on the follow-up encounter for the same mechanism.

Practices using sports medicine software with integrated coding workflows can attach the fracture classification note to the ICD-10 selection as the clinician writes it. The code assignment then follows the clinical findings directly.

Common CPT codes billed with S62.601B

S62.601B pairs with procedure codes that reflect what the provider did during the encounter. The CPT codes billed most often alongside open finger fracture diagnoses are listed below. NCCI bundling edits apply, so verify the current edit pairs before submission using CMS coding guidance.

Debridement codes 97597 and 97598 may bundle with fracture treatment codes, depending on the payer and the NCCI edits in force that quarter. Claims management software that validates ICD-10-to-CPT pairs catches those conflicts before the claim leaves the practice.

Documentation requirements for ICD-10 Code S62.601B

The encounter note must support every element of the code. Missing any one of the elements below gives a payer grounds to deny or downcode the claim.

• Fracture confirmation: Imaging report (X-ray, CT, or fluoroscopy) confirming a fracture is present. A clinical suspicion note alone is insufficient.
• Open wound documentation: Explicit description of skin breach. Language such as “open wound communicating with fracture site” or “compound fracture with exposed bone” directly supports the open-fracture designation.
• Gustilo classification: Note the wound size in centimeters, the contamination level, the degree of soft-tissue damage, and whether periosteal stripping is present. This is what distinguishes “B” from the type III equivalent.
• Encounter type confirmation: The note must make clear this is active treatment, not a monitoring visit or second opinion. Treatments performed (reduction, splinting, debridement, antibiotic prescription) serve as implicit confirmation.
• Laterality and digit specificity: If the note or the imaging identifies the finger, a more specific code applies. Where the finding is genuinely unspecified, add a brief clinical explanation, such as “multiple digits involved, specificity not determinable at presentation”.
• External cause code: ICD-10-CM guidelines recommend pairing S62.601B with a Chapter 20 external cause code describing how the injury occurred. Workers’ compensation claims require it for work injuries.

Practices that use digital intake forms for injury assessments can push the fracture classification fields straight into the clinical note. Wound size, contamination level, and mechanism of injury are then captured at the point of care rather than reconstructed later.

In orthopedic and urgent care settings, structured patient records with injury-specific templates keep the Gustilo classification consistent across every provider. It no longer depends on the attending who first sees the patient.

Coders new to hand fracture documentation can find supplementary guidance in the AHA Coding Clinic, which publishes advice on fracture encounter type selection. Sequela coding for a healed injury follows the same logic as an external cause sequela code like V86.54XS.

Medicare and insurance coverage for S62.601B

S62.601B is a covered diagnosis under Medicare Part A for inpatient care and Part B for outpatient care, when paired with medically necessary procedures. Coverage is not automatic. The linked CPT codes must meet the medical necessity criteria in the payer’s local coverage determination.

Reimbursement for the associated CPT codes varies by geographic locality and is updated annually by CMS. Check any dollar figure against the current CMS Physician Fee Schedule, because the rates change each fiscal year. The CMS ICD-10 codes page carries the current fiscal year’s documentation and update files.

Encounters that carry several ICD-10 codes on one claim raise the odds of an edit conflict. Integrated practice management software that flags NCCI conflicts before submission cuts the volume of claim rework.

ICD-10 Code S62.601B: Documentation and billing summary

The table below consolidates the key billing and documentation facts for S62.601B into a single reference. Use it as a pre-submission checklist for each open-finger-fracture encounter.

The WHO’s ICD-10 international browser holds the global classification hierarchy that underpins ICD-10-CM. It is useful for checking how the S62 block is structured above the CM-specific detail.

The quality of the intake documentation decides the rest. Where the injury-classification data is captured cleanly, the coding team can assign a specific code. Where it is not, the claim defaults to an unspecified code like S62.601B.

How Pabau keeps open-fracture claims accurate

In most practices the fracture classification lives in one place and the claim is built in another. A coder reads the note, picks the 7th character, then keys the CPT codes into a separate billing screen. Any detail the note left out becomes a query, a delay, or a denial weeks later.

Practice management software like Pabau closes that loop. Intake and clinical templates capture wound size, contamination, and mechanism of injury as structured fields. Those fields sit in the same record the claim is built from, so the coder can confirm the encounter type without reopening a scanned document.

At the billing step, Pabau links each diagnosis code to its procedure codes and flags NCCI conflicts before submission. Open-fracture claims leave the practice with the documentation that supports them, so your team spends less time reworking denials and more time seeing patients.

Reduce open-fracture coding errors with Pabau

Pabau links ICD-10 diagnosis codes to CPT procedure codes at the point of billing and validates NCCI edits automatically. It also stores structured clinical notes that support every 7th character selection. See how Pabau supports coding for orthopedic and urgent care practices.

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Conclusion

S62.601B is the code you reach for when the injury is clear but the anatomy in the note is not. That makes it a documentation decision more than a coding one. If the chart can name the digit and the hand, a more specific code is the better claim. Treat the unspecified code as a last resort.

Three documented facts carry the code. The fracture is open, the Gustilo classification is type I or II, and the visit is the first active treatment. Build those into the note template rather than trusting recall at coding time.

Book a demo to see how Pabau links diagnosis codes to procedure codes and validates open-fracture claims before they leave your practice.

Continue your research

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