N16 – Renal tubulo-interstitial disorders in diseases classified elsewhere
ICD-10-CM 2027 diagnosis code · Renal tubulo-interstitial diseases
ICD-10-CM code
N16
- Code
N16(claims format:N16)- Description
- Renal tubulo-interstitial disorders in diseases classified elsewhere
- Short description
- Renal tubulo-interstitial disord in diseases classd elswhr
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 14. Diseases of the genitourinary system (N00-N99)
- Block
- N10-N16 Renal tubulo-interstitial diseases
Notes for N16
Applicable to:
- Pyelonephritis
- Tubulo-interstitial nephritis
Excludes1 (not coded here):
- 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)
- pyelonephritis and tubulo-interstitial nephritis in salmonella infection (A02.25)
- pyelonephritis and tubulo-interstitial nephritis in sarcoidosis (D86.84)
- pyelonephritis and tubulo-interstitial nephritis in Sjogren syndrome (M35.04)
- pyelonephritis and tubulo-interstitial nephritis in systemic lupus erythematosus (M32.15)
- pyelonephritis and tubulo-interstitial nephritis in toxoplasmosis (B58.83)
- renal tubular degeneration in diabetes (E08-E13 with .29)
- syphilitic pyelonephritis and tubulo-interstitial nephritis (A52.75)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block N10-N16
Includes:
- pyelonephritis
Excludes1 (not coded here):
- pyeloureteritis cystica (N28.85)
Index terms for N16
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Pyelonephritis, in, sepsis
- Pyelonephritis, in, brucellosis
- Pyelonephritis, in, lymphoma NEC
- Pyelonephritis, in, leukemia NEC
- Pyelonephritis, in, multiple myeloma
- Pyelonephritis, in, cryoglobulinemia
- Pyelonephritis, in, Wilson's disease
- Disorder, tubulo-interstitial, sepsis
- Pyelonephritis, in, transplant rejection
- Disorder, tubulo-interstitial, brucellosis
- Disorder, tubulo-interstitial, lymphoma NEC
- Disorder, tubulo-interstitial, leukemia NEC
- Pyelonephritis, in, glycogen storage disease
- Disorder, tubulo-interstitial, Wilson's disease
- Disorder, tubulo-interstitial, multiple myeloma
- Disorder, tubulo-interstitial, transplant rejection
- Disorder, tubulo-interstitial, sepsis, streptococcal
- Disorder, tubulo-interstitial, mixed cryoglobulinemia
- Disorder, tubulo-interstitial, glycogen storage disease
- Nephritis, nephritic, tubulo-interstitial, due to, brucellosis
- Nephritis, nephritic, tubulo-interstitial, due to, cryoglobulinemia
- Nephritis, nephritic, tubulo-interstitial, due to, glycogen storage disease
Frequently asked questions
What is ICD-10 code N16?
N16 is the ICD-10-CM code for renal tubulo-interstitial disorders in diseases classified elsewhere, in the block N10-N16 (Renal tubulo-interstitial diseases).
Is N16 a billable code?
Yes. N16 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.