ICD-10 code S80.812A: Abrasion, left lower leg, initial encounter

Key takeaways

ICD-10 code S80.812A is a billable ICD-10-CM diagnosis code for abrasion of the left lower leg, initial encounter.

The code is valid for HIPAA-covered claims with dates of service on or after October 1, 2025.

The 7th character A marks active treatment, while S80.812D covers follow-up care and S80.812S covers sequela.

Documentation has to confirm the left side, an abrasion rather than a laceration, the lower leg, and the encounter phase.

Practice management software like Pabau helps you submit and track claims accurately, which cuts rework on injury claims.

ICD-10 code S80.812A: definition and billable status

ICD-10 code S80.812A is a billable, specific ICD-10-CM diagnosis code for abrasion of the left lower leg, initial encounter. It is valid for HIPAA-covered transactions with dates of service on or after October 1, 2025, under the FY2026 edition.

The code sits in Chapter 19 of the tabular list, which covers injury, poisoning and certain other consequences of external causes (S00-T88). The CDC/NCHS ICD-10-CM web tool lists it as fully specified, so it needs no further digits.

Coders, billers, and clinicians use S80.812A to document a scrape or other superficial skin injury on the left lower leg during active treatment. Because it carries both laterality and encounter type, it meets payer specificity rules that parent-level codes cannot satisfy.

Picking the parent code when a laterality-specific one exists is the usual reason these claims come back. Pabau’s claims management software helps practices submit and track claims accurately, so a rejection shows up while the encounter is still fresh.

Code details at a glance

The table below summarizes the administrative facts coders need before submitting a claim with this code.

Code hierarchy and classification

Knowing where S80.812A sits in the ICD-10-CM hierarchy confirms you are using the most specific code available. The drill-down from the tabular list to code level is below.

One exclusion applies to this section. S80 excludes superficial injuries of the ankle and foot, which are coded under S90 instead. If the abrasion extends past the ankle, review the S90 codes before you commit. Clinicians working in sports medicine and physical therapy settings run into these boundaries constantly.

How the 7th character changes the code

The 7th character is the most frequently misapplied element in injury coding. It defines the episode of care, not the severity of the injury. The ICD-10-CM Official Guidelines for Coding and Reporting (Section I.C.19) set out three valid suffixes for the S80.812 codes.

Coders sometimes read initial encounter as the patient’s first visit to any provider. Suffix A actually applies for as long as the patient receives active treatment for the injury. The switch to suffix D comes when care becomes routine monitoring. Clear patient record documentation of the treatment phase prevents the error.

Sibling codes: laterality and encounter variants

The S80.812 family covers every encounter type for a left lower leg abrasion. Coders often need the right-side counterpart and the unspecified-laterality code too. The full family is below.

The AAPC ICD-10-CM code lookup lists the full S80 family for coders verifying adjacent codes. Use S80.819A only when the note genuinely does not record a side. Payer edits increasingly flag unspecified laterality for audit, so recording left or right at the point of care saves work later.

Approximate synonyms and clinical terminology

Clinical notes rarely use the exact ICD-10-CM descriptor. The terms below all map to S80.812A when the injury is confirmed on the left lower leg during initial treatment.

• Abrasion of the left leg
• Skin abrasion, left lower leg
• Superficial abrasion, left lower extremity
• Scrape, left lower leg
• Superficial wound, left lower leg (non-laceration)
• Friction burn, left lower leg (superficial, non-thermal)
• Road rash, left lower leg (initial treatment phase)

A laceration of the lower leg maps to a different family, S81.8. If the note describes a cut or open wound rather than a scrape, do not use S80.812A. Contusion of the lower leg maps to S80.1, and a late effect of an unspecified open wound at the knee maps to S81.009S. Check the category before you settle on a final code.

Clinical documentation requirements

Four elements have to be in the record for S80.812A to hold up in a payer audit. Missing any one of them leaves the code exposed.

1. Laterality confirmed: The note must say left, not just lower leg. Unspecified laterality forces a downgrade to S80.819A, which draws more scrutiny.
2. Injury type confirmed as abrasion: The record has to describe a superficial skin injury such as a scrape, friction wound, or road rash. A laceration, contusion, or open wound belongs in another family.
3. Anatomical region confirmed as lower leg: The lower leg runs from below the knee to above the ankle. An abrasion of the ankle or foot falls under S90, and an abrasion of the knee falls under S80.21.
4. Encounter phase documented: Active treatment and follow-up care should both be explicit. “Wound cleaned, dressed, and patient instructed on home care” signals an initial encounter. “Wound check, healing well, no intervention” signals a subsequent one.

Practices using digital intake forms can pre-fill laterality and injury-type fields, so fewer notes reach the coder with a blank. Structured clinical forms are the most practical way to head off laterality errors in a busy practice.

Progress notes matter just as much, because the encounter phase changes between visits. A SOAP progress note template keeps the phase of care in a set field rather than buried in free text.

External cause coding requirements

ICD-10-CM guidelines recommend pairing S80.812A with an external cause code from Chapter 20 (V00-Y99) when the mechanism of injury is documented. The pairing matters for any practice billing injury claims to commercial payers or Medicare.

Common pairings for lower leg abrasions fall into these categories.

Fall and contact codes in Chapter 20 also take a 7th character, and it has to match the one on the injury code. An external cause code ending in A pairs with S80.812A, not with S80.812D.

Per the ICD-10-CM Official Guidelines for Coding and Reporting, external cause codes are not mandatory in every payer context. They still improve claim accuracy and support medical necessity, so include them wherever the note records the mechanism. Practices running HIPAA-compliant billing workflows can capture that detail as part of intake.

ICD-9-CM to ICD-10-CM crosswalk for S80.812A

Practices reconciling legacy records need to know that ICD-9-CM carried none of the laterality ICD-10-CM later introduced. Per CMS General Equivalence Mappings (GEMs), the closest ICD-9-CM predecessor for a lower leg abrasion is 916.0. That code covered abrasion or friction burn of the hip, thigh, leg, and ankle, without mention of infection.

This is not a one-to-one equivalence. Because 916.0 records no side, the GEMs entry maps it to S80.819A, the unspecified-laterality code. Reaching S80.812A means going back to the original documentation and confirming the injury was on the left.

Treat the crosswalk as a starting point for audit work rather than an answer. A record that documents the side supports S80.812A. One that does not stays at S80.819A.

Commonly paired CPT codes with S80.812A

The diagnosis code does not determine which CPT procedure code is billed. CPT selection depends on the treatment delivered at the encounter. Some procedure codes do turn up alongside abrasion diagnoses in wound care and office visit scenarios.

CPT pairings are subject to payer medical necessity rules and local coverage determinations. The codes above cover common scenarios rather than required pairings, so check the payer’s policy first. Selective debridement billed as 97597 needs a documented wound size. A repair code such as 12054 applies only where the note records a closure.

Wound care delivered in a therapy setting brings its own evaluation codes, such as 97161. A diagnosis code says what is wrong and a procedure code says what was done. The two are chosen independently, and both have to match the note.

How Pabau keeps injury documentation and claims in one record

Most practices split this work across two systems. The clinician writes the note in the EMR, and someone re-enters the diagnosis when the claim goes out. That handoff is where medical billing rework on injury claims begins. Anything the note left vague has to be chased down by email.

Pabau keeps the note and the claim on the same record. Intake and treatment forms capture laterality, injury type, and phase of care as set fields. The biller reads those fields instead of interpreting free text.

Pabau’s claims management tools then help practices submit and track claims accurately. You can see what went out, what came back, and what is still open, without opening a second portal.

The payoff is less rework on injury claims and less time spent reconstructing a visit weeks later. Esteem Life Medical Group picked Pabau for the same reason, wanting record keeping that stayed in one place.

Keep injury claims moving without the rework

Pabau brings clinical notes, digital forms, and claims into one system. Your team captures the documentation a coder needs, then submits and tracks the claim from the same patient record.

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Conclusion

Two of the four inputs to this code live in the clinical note rather than the coding manual. If the note records the side and the phase of care, S80.812A is a straightforward pick.

If it does not, nothing at the coding stage recovers that specificity. The honest fallback is S80.819A, and payers increasingly treat unspecified laterality as a reason to look closer. So the fix belongs upstream, in how the note gets written.

Ask clinicians for the word left and the phrase active treatment in plain language, and the external cause pairing usually follows at the same visit. Book a demo to see how Pabau keeps injury documentation and claim submission on one record.

Continue your research

Coding a late effect instead of a new injury? S51.801S shows how the sequela suffix works on an open wound in another body region.

Billing debridement by tissue depth? 11042 covers the subcutaneous debridement rules that sit just above simple wound care.

Assessing a lower leg injury at the bedside? Thompson test walks through the Achilles examination and how to record the result.

Standardizing what the first visit captures? Initial consultation template gives you a structured intake form you can adapt for injury visits.

Handing patients a privacy notice? Notice of privacy practices is a ready-to-use template for HIPAA-covered practices.

Frequently asked questions