Question 1

Is N16 a billable ICD-10 code?

Accepted Answer

Yes, N16 is a valid billable ICD-10-CM code for renal tubulo-interstitial disorders in diseases classified elsewhere. It can be used for medical billing and reimbursement purposes.

Question 2

What does ICD-10 code N16 mean?

Accepted Answer

ICD-10-CM code N16 represents Renal tubulo-interstitial disorders in diseases classified elsewhere. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code N16 introduced?

Accepted Answer

Code N16 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code N16?

Accepted Answer

The parent category for N16 is section:N10-N16 (Renal tubulo-interstitial diseases (N10-N16)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

What conditions are excluded from N16?

Accepted Answer

Code N16 has Type 1 Excludes (mutually exclusive conditions) including: diphtheritic pyelonephritis and tubulo-interstitial nephritis (A36.84); pyelonephritis and tubulo-interstitial nephritis in candidiasis (B37.49); pyelonephritis and tubulo-interstitial nephritis in cystinosis (E72.04) and 7 more conditions. These conditions cannot be coded together with N16 as they represent different diagnoses.

Question 6

Can N16 be used as principal diagnosis?

Accepted Answer

No, N16 is a manifestation code and cannot be used as the principal diagnosis. Manifestation codes describe a condition caused by an underlying disease. You must code the underlying condition first, then use N16 as a secondary diagnosis.

N162026

Excludes111Not coded together

Code First9Sequence another code first

Excludes28Not included here

Notes2Additional information

Includes1Included conditions

Also Known As10Alternative terms

Medicare Code Editor Rules1CMS coding restrictions