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ICD-10 Coding for Advanced Maternal Age Pregnancy(O09.51, Z35.51)

Complete ICD-10-CM coding and documentation guide for Advanced Maternal Age Pregnancy. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

AMA in PregnancyElderly GravidaPregnancy at Advanced Maternal Age

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Related ICD-10 Code Ranges

Complete code families applicable to Advanced Maternal Age Pregnancy

O09.5Primary Range

Supervision of elderly primigravida and multigravida

Primary range for coding pregnancies complicated by advanced maternal age.

Z35.5

Supervision of pregnancy with advanced maternal age

Used for supervision of pregnancy due to advanced maternal age without complications.

O35.8

Maternal care for other fetal abnormalities

Used when AMA leads to suspicion of fetal anomalies.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
O09.51Supervision of elderly primigravida, first trimesterUse when supervising a first-time pregnancy in a woman aged 35 or older during the first trimester.
  • Documented age of 35 or older at expected delivery date
  • First trimester prenatal visit notes
Z35.51Supervision of pregnancy with advanced maternal age, first trimesterUse when AMA is the sole reason for increased monitoring without complications.
  • Documented age of 35 or older at expected delivery date
  • Routine prenatal visit notes

Clinical Decision Support

Always review the patient's clinical documentation thoroughly. When in doubt, choose the more specific code and ensure documentation supports it.

Key Information: ICD-10 code for advanced maternal age pregnancy

Essential facts and insights about Advanced Maternal Age Pregnancy

The ICD-10 code for advanced maternal age pregnancy is Z35.5- for routine supervision and O09.5x for cases with complications.

Primary ICD-10-CM Codes for advanced maternal age pregnancy

O09.51
Supervision of elderly primigravida, first trimester
Non-billable Code

Decision Criteria

clinical Criteria

  • Patient is 35 years or older at expected delivery date.

documentation Criteria

  • Trimester-specific supervision documented.

Applicable To

  • Supervision of first pregnancy in women aged 35 and over

Excludes

  • Pregnancy with complications (O09.5x)

Clinical Validation Requirements

  • Documented age of 35 or older at expected delivery date
  • First trimester prenatal visit notes

Code-Specific Risks

  • Incorrectly using for pregnancies with complications

Coding Notes

  • Ensure documentation specifies the trimester and confirms AMA status.
View Full Code Details

Ancillary Codes

Additional codes that should be used in conjunction with the main diagnosis codes when applicable.

Weeks of gestation of pregnancy, less than 10 weeks

Z3A.01
Use to specify the exact gestational age.

Differential Codes

Alternative codes to consider when ruling out similar conditions to the primary diagnosis.

Supervision of pregnancy with advanced maternal age, first trimester

Z35.51
Use Z35.51 when AMA is the sole reason for increased monitoring without complications.

Supervision of elderly primigravida, first trimester

O09.51
Use O09.51 when AMA directly impacts care, such as requiring fetal monitoring.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Advanced Maternal Age Pregnancy to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code O09.51.

Impact

Clinical: May lead to inadequate monitoring., Regulatory: Non-compliance with documentation standards., Financial: Potential for denied claims.

Mitigation Strategy

Use structured templates for documentation., Regularly review documentation guidelines.

Impact

Reimbursement: Incorrect coding can lead to improper DRG assignment., Compliance: May result in non-compliance with coding guidelines., Data Quality: Affects the accuracy of maternal health data.

Mitigation Strategy

Use Z35.5- for routine supervision without complications.

Impact

Using O09.5x instead of Z35.5- for routine AMA.

Mitigation Strategy

Educate coders on proper code selection criteria.

Documentation errors, coding pitfalls, and audit risks are interconnected aspects of medical coding and billing. Addressing all three areas helps ensure accurate coding, optimal reimbursement, and regulatory compliance.

Frequently Asked Questions

Common questions about ICD-10 coding for Advanced Maternal Age Pregnancy, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Advanced Maternal Age Pregnancy

Use these documentation templates to ensure complete and accurate documentation for Advanced Maternal Age Pregnancy. These templates include all required elements for proper coding and billing.

Routine AMA Supervision

Specialty: Obstetrics

Required Elements

  • Patient age at expected delivery date
  • Trimester of pregnancy
  • Any additional monitoring or tests planned

Example Documentation

Patient is a 36-year-old G1P0 at 10 weeks gestation. AMA noted. Plan: Offer NIPT and detailed anatomy scan.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Patient is 35 years old.
Good Documentation Example
Patient is 35 years old at EDD. AMA supervision initiated per guidelines.
Explanation
The good example links age to clinical decision-making.

Need help with ICD-10 coding for Advanced Maternal Age Pregnancy? Ask your questions below.

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