ICD code S72.454D – Nondisplaced supracondylar femur fracture

Key takeaways

S72.454D codes a nondisplaced supracondylar fracture of the right femur at a subsequent encounter for a closed fracture with routine healing.

The 7th character D covers the whole routine healing phase after active treatment ends, not just a single follow-up visit.

Common denial triggers are using A when D is correct and leaving displacement status undocumented. Another is billing a left-femur code: S72.455D (nondisplaced left femur) or S72.452D (displaced left femur).

Pabau, the practice management platform we build, scrubs each claim for missing or invalid details before sending it to payers through Claim.MD.

ICD-10 code S72.454D: Code details at a glance

ICD-10 code S72.454D is the billable code for a nondisplaced supracondylar fracture of the right femur during routine healing. It applies at subsequent encounters for a closed fracture without intracondylar extension, once active treatment is complete. The code sits in category S72 (fracture of femur), and the table below sets out its structure.

What S72.454D covers: Clinical definition of nondisplaced supracondylar femur fracture

The supracondylar region is the area of the distal femur just proximal to the femoral condyles, where the shaft widens before articulating with the knee. Fractures in this zone matter biomechanically. The gastrocnemius pulls on the distal fragment and can cause posterior angulation, even when the fracture is nondisplaced.

A nondisplaced fracture means the bone has broken but the fragments have not shifted out of anatomical alignment. In a displaced fracture, the fragments are offset, angulated, or shortened. The distinction matters for coding because ICD-10-CM assigns a different 6th character to displaced and nondisplaced fractures at the same site.

• Anatomy confirmed: Supracondylar region of the right femur (distal third, above the condyles).
• Displacement status: Nondisplaced, with fragments in anatomical alignment at imaging or clinical assessment.
• Laterality: Right femur only. Code S72.455D applies to the nondisplaced left femur, and S72.454D is right-side only.
• Encounter type: Subsequent (D). The patient is past initial active treatment and now in the healing and recovery phase.
• Fracture type implied: Closed fracture, with no open wound communicating with the fracture site.

Supracondylar femur fractures occur most often in two groups: older adults with osteoporosis after low-energy falls, and younger patients after high-energy trauma. Physical therapy after initial orthopedic management is one of the most common settings where S72.454D appears on claims.

Understanding the 7th character: Subsequent encounter (D) explained

The 7th character is where most coding errors occur with this code family. The ICD-10-CM Official Guidelines for Coding and Reporting (Section I.C.19.a) define the 7th-character encounter categories below.

In practice, a subsequent encounter covers far more than a second visit. A patient may have dozens of D-suffix encounters across months of physical therapy and follow-up imaging. The D suffix stops when the fracture is confirmed healed. It also stops when the provider documents delayed healing, nonunion, or malunion, which take G, K, and P. A sequela, treated after healing, takes S.

S72.454D vs adjacent codes: Choosing the right code

Several codes in the S72.45 subcategory differ from S72.454D by only one character. Getting one character wrong produces a laterality, displacement, or encounter-type error, and each is a common denial reason for this code family. The breakdown below shows which character carries which fact, and what each swap turns the code into.

The table lists the nearest neighbors of S72.454D and the single difference that separates each one from it. Check it against the note before you submit a follow-up claim.

Excludes1, Excludes2, and coding notes for S72.454D

The ICD-10-CM tabular list carries notes at three levels above S72.454D: the S72 category, the S72.4 subcategory, and S72.45. According to the CMS ICD-10-CM codes and guidelines, coders must review these notes before finalizing any S72 code.

• Excludes1 (S72 category): Traumatic amputation of hip and thigh (S78.-). It can’t be coded with S72 at the same time, so one code replaces the other.
• Excludes2 (S72 category): Fracture of lower leg and ankle (S82.-). It isn’t part of S72, but the two may be coded together when a femur fracture and a tibia or fibula fracture are both present.
• Excludes2 (S72 category): Fracture of foot (S92.-). Foot fractures are coded separately and may be assigned together with S72 when both are present.
• Excludes2 (S72 category): Periprosthetic fracture of prosthetic implant of hip (M97.0-). It isn’t part of S72, but the two may be coded together when the patient has both.
• Excludes2 (S72.4 subcategory): Fracture of shaft of femur (S72.3-). A shaft fracture is coded separately and may be reported with S72.454D when both are present.
• Excludes2 (S72.4 subcategory): Physeal fracture of lower end of femur (S79.1-). A growth-plate fracture is coded separately and may be reported together when both are present.
• Excludes1 (S72.45 subcategory): Supracondylar fracture with intracondylar extension of lower end of femur (S72.46-). If the fracture line extends between the condyles, code from S72.46- instead.

The S72 category also sets two defaults. A fracture not documented as displaced or nondisplaced is coded as displaced, and one not documented as open or closed is coded as closed. That first default is why a note missing the word “nondisplaced” turns S72.454D into S72.451D.

S72.45 also lists “supracondylar fracture of lower end of femur NOS” as an inclusion term. An unqualified supracondylar fracture therefore still codes here, as long as there is no intracondylar extension.

Documentation requirements for S72.454D

Every element of the code’s descriptor must be supported by documentation in the medical record. Displacement is the element that slips most often. Under the S72 default note, a fracture not documented as nondisplaced codes as displaced (S72.451D). That code can mismatch the visit and trigger a denial or a payer query.

• Fracture location: Documentation must specify the supracondylar region of the femur, or the distal femur above the condyles. A generic “femur fracture” is not sufficient.
• Right laterality: The record must explicitly state “right femur” or “right lower extremity fracture.” Imaging reports, operative notes, and progress notes must all agree.
• Nondisplaced status: The X-ray, CT, or MRI report must confirm nondisplaced alignment. Otherwise, the treating provider’s note must document no significant displacement.
• Encounter type (subsequent/D): The note must show that initial fracture care was documented at a prior encounter. It must also show current care is for healing or recovery. Phrases like “fracture healing well” or “routine post-fracture management” support the D suffix.
• Closed fracture: The record must not document an open wound at the fracture site. If there is any communication, an open fracture code from the same subcategory applies.

Laterality consistency across all record elements is particularly important. Pairing a right-femur fracture on the operative note with a left-femur billing code is a common keying error. It triggers automatic payer rejection.

Payer requirements and submitting S72.454D claims

Medicare Part B covers subsequent fracture care encounters billed under orthopedic evaluation and management or fracture care CPT codes. S72.454D serves as the supporting diagnosis. Coverage is subject to payer-specific Local Coverage Determinations (LCDs) and medical-necessity review. Commercial payers follow similar documentation rules but vary on prior authorization for associated physical therapy and imaging.

Key payer considerations when billing with ICD-10 code S72.454D:

• Medicare: Prior authorization isn’t required for standard follow-up fracture care visits coded with S72.454D, but auditors review medical necessity documentation. Home health and SNF claims using this code are subject to additional coverage criteria under Part A.
• Commercial payers: Prior authorization is commonly required for associated physical therapy sessions that extend beyond standard episode limits. Check each payer’s coverage policy before submitting therapy claims linked to S72.454D.
• Clearinghouse submission: Pabau submits CMS-1500 claims through the Claim.MD clearinghouse. Each claim is scrubbed for missing or invalid details before it reaches the payer.
• Place of service: S72.454D may be billed in an outpatient office or private PT practice (POS 11), or an on-campus outpatient hospital (POS 22). It may also be billed in a skilled nursing facility (POS 31) or the home (POS 12). The place of service code must match where the care was given.

Common S72.454D claim denial reasons and how to resolve them

S72.454D denials follow predictable patterns. The same five errors appear repeatedly in denial management in healthcare audits for orthopedic fracture codes. Each rejection comes back with a reason code, which our guide to medical billing denial codes decodes.

Coding tips: Subsequent encounter (D) vs sequela (S)

The D-versus-S distinction trips up even experienced coders because both occur after the fracture has been treated. The rule is clear once the clinical question is framed correctly. Is the fracture still healing, or has it healed and left a lasting problem?

• Use D (S72.454D): The patient returns for a cast change, wound check, or physical therapy evaluation, and the fracture is documented as actively healing. The injury is the reason for the visit.
• Use D (S72.454D): Imaging shows callus formation, and the provider notes “fracture healing progressing.” The fracture has not yet united fully.
• Use S (S72.454S): The fracture is confirmed healed, and the patient now has post-traumatic knee stiffness or arthritis from it. The residual condition, not the fracture, is the reason for the visit.
• Don’t use S: Just because a lot of time has passed. Healing status decides, not elapsed time. A fracture still being monitored 18 months after injury stays on D if it hasn’t fully united.

Associated CPT and HCPCS codes billed with S72.454D

S72.454D is a diagnosis code and must be paired with a procedure code on every claim. The CPT codes below are the ones most commonly billed alongside this diagnosis in outpatient and post-acute settings. Verify each pairing against the current AAPC ICD-10-CM code lookup and the payer’s coverage policy before submission.

Rehab claims are where S72.454D shows up most often. Before billing a therapy episode, check the complexity rules on 97161 and the timed-unit rules on 97110.

Orthopedic and sports medicine practices handle high volumes of fracture follow-up encounters. For them, clean claim submission depends on matching the encounter-type suffix to the documented clinical stage. Catching a wrong suffix before the claim leaves the practice costs far less than appealing it.

How claims management software prevents S72.454D denials

In many practices, fracture follow-up claims are still checked by hand. A biller reads the progress note and keys the code into a separate billing tool. A wrong suffix only surfaces when the payer rejects the claim.

Pabau’s medical billing software keeps the visit, the note, and the claim in one patient record. Each CMS-1500 claim is scrubbed for missing or invalid details, then sent to payers through Claim.MD. Eligibility is checked before the patient arrives.

When a claim comes back rejected, Pabau flags it as Needs action, so the corrected S72.454D claim goes back out quickly. Payments settle straight from electronic remittance advice (ERA) files, which closes the medical billing loop on each follow-up visit.

Send cleaner fracture follow-up claims

Pabau scrubs every claim for missing or invalid details before it goes out through Claim.MD. Rejected claims are flagged for action, so S72.454D follow-ups get paid without a long resubmission loop.

Book a demo

Conclusion

S72.454D rewards discipline more than expertise. Before the claim goes out, confirm four facts in the note: right femur, nondisplaced, past active treatment, and still healing.

When one of those facts is missing, fix the documentation first and the code second. A corrected note supports every later D-suffix visit in the episode, while a corrected code fixes only one claim.

The trade-off to remember is timing. Move off D as soon as the provider documents delayed healing, nonunion, malunion, or a sequela. Book a demo to see how Pabau keeps fracture follow-up claims clean from the first visit to the last.

Continue your research

Want to understand how clearinghouse submission works? Claim.MD clearinghouse guide walks through how Pabau submits claims and checks eligibility through Claim.MD.

Researching denial patterns across your fracture claims? Denial codes in medical billing covers the CARC and RARC codes you will see when S72.454D claims are rejected.

Need a primer on the revenue cycle for orthopedic practices? Revenue cycle management explained covers the end-to-end process from eligibility verification through ERA posting.

Frequently asked questions