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ICD-10 Coding for Secondary Hyperparathyroidism of Renal Origin(N25.81, E21.1)

Complete ICD-10-CM coding and documentation guide for Secondary Hyperparathyroidism of Renal Origin. Includes clinical validation requirements, documentation requirements, and coding pitfalls.

Also known as:

Renal Secondary HyperparathyroidismSHPT due to CKD

Related ICD-10 Code Ranges

Complete code families applicable to Secondary Hyperparathyroidism of Renal Origin

N25-N29Primary Range

Disorders of kidney and ureter

This range includes N25.81, which is specific for secondary hyperparathyroidism of renal origin.

Disorders of other endocrine glands

This range includes E21.1, which is used for secondary hyperparathyroidism not due to renal causes.

Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

CodeDescriptionWhen to UseKey Documentation
N25.81Secondary hyperparathyroidism of renal originUse when documentation explicitly links hyperparathyroidism to renal disease.
  • eGFR <45 mL/min/1.73m²
  • PTH >65 pg/mL
  • Radiographic evidence of renal osteodystrophy
E21.1Secondary hyperparathyroidism, not elsewhere classifiedUse when hyperparathyroidism is due to non-renal causes.
  • Documentation of non-renal etiology

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 secondary hyperparathyroidism of renal origin

Essential facts and insights about Secondary Hyperparathyroidism of Renal Origin

The ICD-10 code for secondary hyperparathyroidism of renal origin is N25.81, requiring documentation of renal linkage.

Primary ICD-10-CM Codes for secondary hyperparathyroidism of renal origin

Secondary hyperparathyroidism of renal origin
Billable Code

Decision Criteria

clinical Criteria

  • Presence of CKD stage 3a-5 with elevated PTH

documentation Criteria

  • Explicit mention of renal origin in hyperparathyroidism

Applicable To

  • Secondary hyperparathyroidism due to chronic kidney disease

Excludes

  • Secondary hyperparathyroidism due to non-renal causes (E21.1)

Clinical Validation Requirements

  • eGFR <45 mL/min/1.73m²
  • PTH >65 pg/mL
  • Radiographic evidence of renal osteodystrophy

Code-Specific Risks

  • Incorrectly coding E21.1 when renal origin is not documented.

Coding Notes

  • Ensure explicit documentation of renal origin for accurate coding.

Ancillary Codes

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

Chronic kidney disease (CKD) stages

N18.x
Use to specify the stage of CKD alongside N25.81.

Dependence on renal dialysis

Z99.2
Use if the patient is dialysis-dependent.

Differential Codes

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

Secondary hyperparathyroidism, not elsewhere classified

E21.1
Use E21.1 for non-renal causes of secondary hyperparathyroidism.

Secondary hyperparathyroidism of renal origin

N25.81
Use N25.81 when renal disease is the cause.

Documentation & Coding Risks

Avoid these common documentation and coding issues when documenting Secondary Hyperparathyroidism of Renal Origin to ensure proper reimbursement, maintain compliance, and reduce audit risk. These guidelines are particularly important when using ICD-10 code N25.81.

Impact

Clinical: Misrepresentation of patient's condition., Regulatory: Non-compliance with coding standards., Financial: Potential claim denials.

Mitigation Strategy

Educate providers on documentation requirements., Use templates that prompt for renal linkage.

Impact

Reimbursement: Incorrect DRG assignment leading to potential revenue loss., Compliance: Non-compliance with coding guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation Strategy

Verify documentation for renal linkage and use N25.81.

Impact

Failure to document renal origin can lead to incorrect coding.

Mitigation Strategy

Implement documentation audits and provider education.

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 Secondary Hyperparathyroidism of Renal Origin, with expert answers to help guide accurate code selection and documentation.

Documentation Templates for Secondary Hyperparathyroidism of Renal Origin

Use these documentation templates to ensure complete and accurate documentation for Secondary Hyperparathyroidism of Renal Origin. These templates include all required elements for proper coding and billing.

Nephrology Progress Note

Specialty: Nephrology

Required Elements

  • CKD stage
  • PTH levels
  • Renal origin linkage

Example Documentation

Assessment: CKD stage 4 (eGFR 23, Cr 3.2); Secondary hyperparathyroidism of renal origin (PTH 320 pg/mL, phosphate 5.8 mg/dL); Plan: Initiate cinacalcet; monitor calcium/phosphate.

Examples: Poor vs. Good Documentation

Poor Documentation Example
Assessment: CKD; Hyperparathyroidism.
Good Documentation Example
Assessment: CKD stage 4; Secondary hyperparathyroidism of renal origin.
Explanation
The good example explicitly links hyperparathyroidism to renal disease, allowing for accurate coding.

Need help with ICD-10 coding for Secondary Hyperparathyroidism of Renal Origin? Ask your questions below.

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