N14.3
Nephropathy induced by heavy metals
N14.3 (also written N143) is a billable ICD-10-CM diagnosis code for nephropathy induced by heavy metals. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category N14 (Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions). The Alphabetic Index lists it under 6 entries. Its coding notes include a Code first instruction, a Use additional code instruction, 1 Excludes1 entry and 8 Excludes2 entries.
Code first
If the underlying condition listed here is present and known, sequence it first.
- poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)
Use additional code
Add the listed code as a secondary code, if known.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Other clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
- pyelonephritis
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 6 entries
- Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic), lead
- Nephritis, nephritic (albuminuric) (azotemic) (congenital) (disseminated) (epithelial) (familial) (focal) (granulomatous) (hemorrhagic) (infantile) (nonsuppurative, excretory) (uremic), saturnine
- Nephropathy, heavy metal-induced
- Nephropathy, lead
- Nephropathy, saturnine
- Nephropathy, toxic NEC, due to, heavy metals