ICD-10 code O62.2: Other uterine inertia billing guide

Key takeaways

ICD-10 code O62.2 (Other uterine inertia) is a billable ICD-10-CM diagnosis code valid for HIPAA-covered transactions, effective October 1, 2025.

Eight conditions fall under O62.2, including two atony-of-uterus variants, desultory labor, irregular labor, poor contractions, and uterine inertia NOS.

O62.2 is distinct from O62.0 (primary inadequate contractions) and O62.1 (secondary uterine inertia). Choosing the wrong sibling code is a common trigger for claim denial.

O62.2 excludes postpartum atony of the uterus, coded instead as O72.1 with hemorrhage or O75.89 without it.

Pabau’s claims management software validates required insurer fields for O62.2 claims and tracks status on a single dashboard.

ICD-10 code O62.2 covers other uterine inertia. It applies when labor contractions are inadequate, irregular, or otherwise abnormal in a way that doesn’t fit the specific definitions of O62.0 or O62.1. It’s a billable code, valid for every HIPAA-covered claim, and one of the more frequently reported codes in the O62 family.

Most labor dystocia denials trace back to one of two mistakes: the wrong sibling code, or missing documentation of the specific dysfunction type.

Payers enforce that distinction at adjudication, so treating O62.0, O62.1, and O62.2 as interchangeable creates avoidable rework. OB/GYN practice management workflows that build the difference into charge capture catch it before the claim goes out.

ICD-10 code O62.2 at a glance

The table below gives coders and billers the at-a-glance facts they need before submission. The same level of detail prevents mismatches on adjacent codes, like N93.9.

What does ICD-10 code O62.2 cover?

ICD-10 code O62.2 documents other uterine inertia. Physicians assign it when labor contractions are inadequate, irregular, or otherwise abnormal in a way that doesn’t fit the specific definitions of O62.0 or O62.1.

The code sits inside category O62, abnormalities of forces of labor. That category belongs to the broader obstetric chapter O00-O9A, which covers pregnancy, childbirth, and the puerperium.

“Uterine inertia” is the clinical term for contractions that are too weak, too irregular, or too infrequent to drive effective labor progress. According to the Centers for Medicare and Medicaid Services, or CMS, ICD-10-CM updates every year.

The FY2026 edition takes effect October 1, 2025, and is the current valid coding year for O62.2. The WHO ICD-10 international version also carries a corresponding O62.2 designation, though clinical application details differ between the US ICD-10-CM modification and the international release.

Clinically, this code applies during active labor when contraction quality deteriorates or fails to establish properly. It signals a management decision point: the labor and delivery team needs to determine whether augmentation, further monitoring, or operative delivery is appropriate.

Coders assign ICD-10 code O62.2 based on the physician’s documented diagnosis, not solely on fetal monitoring strip findings.

Which eight conditions fall under O62.2?

Eight specific conditions map to ICD-10 code O62.2 via the official Applicable To notes. Each represents a distinct clinical presentation of abnormal uterine contraction patterns during labor.

The physician’s documentation must support one of these specific diagnoses for O62.2 to be the appropriate code.

A key documentation principle: the coder should not infer O62.2 from a nursing note or fetal monitoring strip alone. The attending physician or midwife must explicitly document one of these conditions in the medical record.

Medical forms that prompt clinicians to document the specific type of labor dysfunction at the point of care cut coding ambiguity later on. That, in turn, means fewer O62.2 claims bounce back.

O62.2 vs. O62.0 and O62.1: Picking the right sibling code

The most common source of miscoding in the O62 category is treating the three inertia sub-codes as equivalent. They are not. Each represents a different phase of labor and a different clinical scenario. Payers apply code-level edits, so the distinction carries direct reimbursement consequences.

Decision rule: Start with O62.0 if inadequate contractions were present from the outset. Use O62.1 if the documentation specifically states “arrested active phase” or contractions that previously established but then ceased.

If the documented condition matches one of the eight Applicable To conditions, such as uterine atony or desultory labor, O62.2 is correct. The same physician-documentation-first principle applies to other obstetric diagnoses with sibling-code distinctions, including O62.4.

What O62.2 excludes, and why it matters for claims

Understanding O62.2’s excludes notes prevents a common claim rejection: reporting two codes the ICD-10-CM index treats as mutually exclusive.

• Excludes1 – Atony of uterus with hemorrhage, postpartum (O72.1): This is an Excludes1 note, meaning O62.2 and O72.1 describe mutually exclusive conditions and must never be reported on the same claim. If the record documents postpartum hemorrhage caused by uterine atony, code O72.1 instead of O62.2, not alongside it.
• Excludes1 – Atony of uterus without hemorrhage, postpartum (O75.89): This is a second Excludes1 note. O62.2 and O75.89 also describe mutually exclusive conditions, so a claim should never report both. If the record documents postpartum atony without hemorrhage, code O75.89 instead of O62.2.
• No relationship to O77: O62.2 carries no excludes note referencing O77 (labor and delivery complicated by fetal stress). The two codes are unrelated in the tabular list. Don’t assume any coding restriction, or permission, between them without checking the current Excludes list directly.
• Parent category O62 notes: Any exclusion notes at the category level (O62) apply to all codes within the category, including O62.2. Review the O62 category header in the tabular list for any such parent-level notes.
• Chapter O00-O9A general notes: The obstetric chapter carries instructions about 7th character extensions and sequencing that apply broadly to all codes in the chapter. O62.2 does not require a 7th character, but coders should verify this against the current FY2026 tabular list.

Miscoding either Excludes1 relationship is a consistent source of claim rejection. Excludes1 means the two conditions can never appear on the same claim. An Excludes2 note is different: it permits both codes when the documentation supports each one independently.

Confirm the O72.1 and O75.89 relationships against the current AAPC ICD-10-CM code lookup before submission.

Coding and documentation rules that keep O62.2 claims clean

Correct assignment of ICD-10 code O62.2 depends on both documentation accuracy and sequencing decisions. These guidelines align with the ICD-10-CM Official Guidelines for Coding and Reporting, which CMS and NCHS co-maintain.

For obstetric practices managing HIPAA-compliant billing workflows, embedding these rules into charge capture reduces rework at the back end.

• Maternity patient age applicability: O62.2 carries a maternity patient age edit of 12-55 years. Claims submitted with a patient age outside this range will likely fail automated age edits at the payer. Verify patient demographics before submission.
• Principal vs. additional diagnosis sequencing: In deliveries where uterine inertia is the condition that prompted the encounter or primarily drove the management, O62.2 may be sequenced as the principal diagnosis. If the delivery outcome code (Z37.x) is sequenced first per chapter guidelines, O62.2 functions as an additional code. Follow the ICD-10-CM Official Guidelines chapter 15 instructions on obstetric coding and principal diagnosis selection.
• No 7th character required: O62.2 does not require a 7th character extension. The five-character code is complete as submitted.
• Physician documentation required: O62.2 must be supported by explicit physician, nurse-midwife, or other qualified provider documentation. Coding from nursing notes or monitoring strip interpretation alone is not appropriate.
• Valid for HIPAA-covered transactions: O62.2 is a billable/specific code valid for submission on all standard HIPAA transactions (837P, 837I). It does not require further specificity at the character level.

Teams using claims management software can validate O62.2 claims against required insurer-submission fields before sending, then track claim status on a single dashboard. Good patient intake software at the point of care also reduces the retrospective querying that slows obstetric billing cycles.

How uterine inertia shows up during labor and delivery

Obstetric coders rarely see a standalone O62.2 claim. In practice, the diagnosis appears alongside a delivery code and, frequently, one or more procedure codes reflecting clinical management. Understanding the clinical scenario helps coders identify when O62.2 is appropriate and what companion codes to expect.

Uterine inertia in any of its O62.2 forms typically surfaces through one of three findings the labor and delivery team documents:

• Inadequate contraction frequency: fewer than three contractions per 10 minutes.
• Insufficient amplitude: peak pressure below effective thresholds on intrauterine pressure catheter monitoring.
• Irregular patterns: contractions that don’t produce cervical change.

The clinical response informs the procedure code pairing. EHR integration that pulls contraction monitoring data directly into the clinical note strengthens the documentation chain between the bedside finding and the coded diagnosis.

Which procedure codes pair with an augmented labor?

When O62.2 drives a management decision toward labor augmentation, coders should expect associated procedure codes alongside the diagnosis. Common pairings include:

• Oxytocin augmentation: The most frequent clinical response to documented uterine inertia. In ICD-10-PCS inpatient coding, this maps to a drug administration procedure code. In outpatient/physician billing, augmentation may be captured under the applicable E&M or delivery code rather than a separate procedure line.
• Artificial rupture of membranes (AROM): Sometimes performed to stimulate or augment labor when contractions are inadequate. Carries its own ICD-10-PCS or CPT procedure code depending on the facility vs. professional billing context.
• Cesarean delivery: When augmentation fails to resolve the contraction pattern, cesarean is the clinical outcome. The delivery method itself is captured by a procedure code or O82, encounter for cesarean delivery without indication. It isn’t captured by the Z37.x outcome-of-delivery code, which records only liveborn or stillborn status and singleton or multiple status. O62.2 remains as an additional code reflecting the indication.

Procedure code sequencing rules require that ICD-10-PCS codes reflect the actual procedure performed, not the intended procedure. Augmentation sometimes gets initiated but the patient still delivers vaginally before it takes full effect.

When that happens, both the attempted augmentation code and the vaginal delivery outcome code may apply. Verify sequencing against CMS ICD-10 coding guidelines for the current fiscal year. Teams managing high obstetric volume can reduce documentation burden in healthcare by automating pre-submission checks for paired code completeness.

Mapping O62.2 back to its ICD-9-CM predecessor

Legacy billing systems, historical record review, and payer audits occasionally require mapping between the current O62.2 ICD-10-CM code and its ICD-9-CM predecessor. The General Equivalence Mappings, or GEMs, are produced by CMS and the CDC’s National Center for Health Statistics, or NCHS. Reference tools such as ICD List republish the same GEMs data for quick lookup.

The ICD-9-CM 661.2x code range (with various episode-of-care fifth digits) served the same broad function as O62.2 in the current system. The transition to ICD-10-CM in October 2015 separated the O62 sub-codes more granularly.

For historical audits covering pre-October 2015 claims, the 661.2x range is the appropriate ICD-9-CM reference. Coders cross-checking legacy claims for other codes, such as M16.2, should verify equivalencies against the current CMS GEMs files for the claim date.

The other O62 codes coders should recognize

Coders working with uterine inertia and abnormal labor force documentation should be familiar with all O62 siblings.

Picking the wrong sibling code triggers a mismatch between documentation and billing that surfaces in payer audits. For women’s health clinic software integrated with billing modules, building code family relationships into charge capture workflows reduces selection errors.

O62.9 (unspecified) should be used only when the physician’s documentation genuinely cannot support a more specific sub-code. Coders should query the provider before defaulting to an unspecified code. Payer contracts increasingly apply specificity edits that assign lower reimbursement weight to unspecified obstetric diagnoses.

How Pabau keeps O62.2 claims accurate without manual reconciliation

Today, obstetric billing teams typically reconcile the delivery note against the claim form by hand. They check that documentation supports one of the eight Applicable To conditions and that the right companion codes are attached before the claim goes out.

Practice management software like Pabau replaces that manual check with a structured claims workflow. It validates the fields an insurer requires before a claim can be sent, and gates submission until they’re complete. Each claim’s status then shows on a single dashboard instead of a spreadsheet or a payer portal.

For labor and delivery teams billing O62.2 alongside delivery and procedure codes, that means fewer claims bounce back for missing required fields. Billing staff can also see where every obstetric claim sits without chasing updates one by one.

Streamline obstetric billing documentation

Pabau helps labor and delivery teams capture diagnosis-specific documentation at the point of care, reducing coding queries and claim rework for O62.2 and related obstetric codes.

Book a demo

Conclusion

Getting O62.2 right comes down to one habit. Match the physician’s exact words to a specific Applicable To condition, not a vague description of labor trouble. That single check prevents the sibling-code mix-ups and Excludes1 violations that drive most O62.2 denials.

The trade-off is small. A quick query to the physician costs a few minutes now, when a note is ambiguous. The alternative is a bounced claim and a resubmission cycle weeks later. For a busy labor and delivery service, that trade is worth making every time.

Pabau’s claims management software checks the required fields before an O62.2 claim leaves the practice, catching missing information before it reaches the payer. Book a demo to see how Pabau supports obstetric billing teams end to end.

Continue your research

Coding another obstetric complication? O21.8 covers vomiting patterns that complicate pregnancy and need their own specific documentation.

Billing for a labor complication drug? J0610 walks through the calcium gluconate injection code billing teams use for magnesium toxicity cases.

Curious how other sibling-code families work? M15.2 shows how the same specificity rule plays out for hand osteoarthritis.

Frequently asked questions