ICD-10 Code O87.4: Varicose veins of lower extremity in the puerperium

Key takeaways

ICD-10 code O87.4 is the billable, specific code for varicose veins of the lower extremity in the puerperium.

The code sits in the O87 block, which covers venous complications and hemorrhoids in the puerperium.

Assignment needs physician documentation that names the lower extremity and places the diagnosis inside the six-week postpartum window.

The FY2026 edition took effect on October 1, 2025 and stays valid through September 30, 2026.

Practice management software like Pabau keeps postpartum exam findings in structured fields, so coders can support O87.4 on the claim.

ICD-10 code O87.4: Definition and billable status

ICD-10 code O87.4 is the billable ICD-10-CM code for varicose veins of the lower extremity in the puerperium. It covers dilated surface veins in the legs that appear or worsen in the weeks after delivery.

The Centers for Medicare and Medicaid Services, known as CMS, lists the code as valid for the fiscal year 2026 edition. That edition took effect on October 1, 2025 and runs through September 30, 2026.

The full descriptor is “Varicose veins of lower extremity in the puerperium.” O87.4 is a terminal code, so there is no further digit to add and none is expected. It belongs to Chapter XV, which covers pregnancy, childbirth and the puerperium. The CDC ICD-10-CM tool carries the official tabular list entry.

O87.4 at a glance: Key code facts

Before assigning O87.4, confirm three things. The treating physician documented the diagnosis, the site is the lower extremity, and the event falls inside the puerperium. The table below holds the quick-reference facts your claims management workflow needs.

Clinical description of postpartum varicose veins

Varicose veins of the lower extremity in the puerperium are dilated, twisted surface veins in the legs. During pregnancy, higher progesterone relaxes the vein walls and a larger blood volume raises venous pressure. Both changes leave the leg veins prone to dilation.

After delivery those changes settle gradually. Varicosities that started in pregnancy often persist or worsen in the early postpartum weeks. Teams working in OB/GYN practice management software can build the finding into the postpartum visit template, so it reaches the coder.

The puerperium runs from delivery to about six weeks later. O87.4 applies to varicose veins that appear or are diagnosed inside that window. Patients may report ropey veins on the legs, aching, heaviness, or mild swelling of the limb.

• Typical presentation: Dilated surface veins in the calf, the thigh, or both legs
• Symptom onset: Often begins before delivery, then becomes clinically significant during the puerperium
• Risk factors: Multiple pregnancies, prolonged standing, prior varicose veins, obesity
• Clinical significance: Usually benign, but it must be told apart from deep vein thrombosis, which takes a different code

ICD-10-CM hierarchy for O87.4

The classification tree shows why O87.4 is the most specific option on offer. It sits four levels deep in ICD-10-CM. Coders who work across the same chapter, including codes such as O90.9, will recognize the structure.

Approximate synonyms for O87.4

The alphabetic index lists several alternate terms that lead to O87.4. Physician notes rarely use the formal descriptor, so the variants are worth knowing. Keep a medical coding cheat sheet beside the chart for the wording your providers use most.

• Varicose veins of legs in the puerperium
• Postpartum varicose veins of lower limb
• Varicosities of lower extremity in the puerperium
• Puerperium varicose veins, lower leg
• Postpartum lower limb varicosities
• Varicose veins after childbirth, lower extremity

When a note uses any of these terms, O87.4 is the correct and specific code. The diagnosis still has to sit inside the six-week puerperium and name the lower extremity. For synonyms attached to other O87 subcodes, check the AAPC code search tool.

Related codes in the O87 block

The O87 block covers every venous complication and hemorrhoid case arising in the puerperium. Picking the wrong subcode is the most common error here, usually a slip between O87.4, the thrombosis codes, and the unspecified O87.9. The table below maps all seven siblings in the block.

Coding guidelines and documentation requirements

Assigning O87.4 depends on what the physician documents, not on what the coder infers. The ICD-10-CM Official Guidelines ask the treating provider to record the diagnosis before a coder assigns it. In obstetric coding, the timing relative to delivery is part of that record.

Practices that standardize their postpartum notes with digital clinical forms lose fewer of these details between the exam room and the claim.

These are the core documentation requirements for O87.4, taken from the ICD-10-CM official guidelines:

• Diagnosis must be physician-documented: “Varicose veins” or an accepted synonym has to appear in a clinician note. Imaging alone is not enough.
• Anatomical site specified: The note must name the lower extremity, such as the leg, calf, thigh, or lower limb. Varicose veins of the vulva or perineum take a different code.
• Postpartum timing confirmed: The diagnosis falls inside the six-week puerperium. If the patient is seen later, check whether O94 applies instead.
• Payer rules still apply: Billable does not mean reimbursed. Policies on postpartum venous complications vary, so verify with the plan before you submit.

Postpartum notes carry the same privacy obligations as the rest of the chart, and the documentation compliance checklist for primary care sets out the standards.

When to use O87.4 instead of another O87 code

Each O87 subcode describes a distinct clinical picture. O87.4 is for varicose veins of the lower extremity, so thrombosis, hemorrhoids and unspecified venous complications all sit elsewhere. Providers who manage postpartum care in pelvic health software can put this decision logic in front of the clinician at the visit.

O87.9 is a last resort. When the note is vague, query the provider before you settle for an unspecified code. Deep phlebothrombosis needs imaging confirmation, usually a duplex scan billed under 93970. Hemorrhoids in the puerperium belong to O87.2.

Index references for O87.4

The alphabetic index offers several routes to O87.4. Knowing them stops the code slipping past when a note uses non-standard wording. A records system that surfaces those terms straight from the chart saves the coder a manual search.

• Varix or varicose veins, in childbirth or puerperium, legs: leads to O87.4
• Complication, puerperium, venous, varicose veins of lower extremity: leads to O87.4
• Varicosity, lower extremity, postpartum: cross-referenced to O87.4
• Phlebectasia, puerperium, lower limb: an alternate index path to O87.4

Check index references against the WHO ICD-10 browser for the international definition. Then cross-check the US tabular list in the CDC tool for the rules specific to ICD-10-CM.

How Pabau supports postpartum coding accuracy

O87.4 is usually lost at the exam rather than at the claim. The clinician sees the varicosities, mentions them to the patient, and moves on to the rest of the check. Nothing structured reaches the chart, so the coder has nothing to work from.

Practice management software like Pabau replaces that free-text note with a postpartum form that has its own field for lower-limb venous findings. The clinician records the finding during the visit. It lands in the client record with the visit date attached, which is the timing evidence the puerperium window calls for.

Pabau Scribe, our AI scribe, writes the note up from the consultation itself. The wording a coder depends on is captured while the clinician is still talking. Digital forms cover the rest of the obstetric record, from the Apgar score at delivery to the six-week check.

Send the new patient questionnaire ahead of the first visit and the history is already in the chart when the patient arrives. Claims then draw on a complete record, so fewer postpartum submissions come back asking for more detail.

Capture postpartum findings the coder can use

Pabau’s structured digital forms and integrated claims tools record obstetric findings at the point of care. Your team submits specific codes like O87.4 with the documentation already attached.

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Conclusion

The coding work on O87.4 is straightforward once the note is right. The risk sits earlier, in a postpartum exam where nobody was prompted to record the leg findings in a structured field.

So fix the template before you audit the claims. When the postpartum form asks for lower-limb venous findings, O87.4 stops being a judgment call. The unspecified O87.9 fallback then becomes rare, and your denial rate follows it down.

Book a demo to see how Pabau structures postpartum documentation, so obstetric claims leave your practice with the specific code attached.

Continue your research

Coding the treatment as well as the diagnosis? CPT code 36471 covers sclerotherapy billing, reimbursement, and the modifiers that go with it.

Working through the rest of the puerperium chapter? ICD-10 code O90.9 handles puerperium complications that fall outside the O87 block.

Need the vein code for a non-obstetric patient? ICD-10 code I87.9 is the unspecified vein disorder code used outside the postpartum window.

Building out your postpartum care plans? Postpartum diet plan gives you a recovery template to hand the patient at the six-week check.

Tracking vitals across the pregnancy? Blood pressure pregnancy chart keeps antenatal and postpartum readings in one place.

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