A9529 HCPCS Level II Code: Iodine i-131 sodium iodide solution, diagnostic, per millicurie
HCPCS Level II code, maintained by CMS. Not a CPT code: CPT (HCPCS Level I) is a separate AMA code set that MedCoder does not publish. About HCPCS Level II
Compare with another codeCheck this code on a claim
Medicare Coverage & Payment
- CMS short descriptor: I131 iodide sol, dx
Source: CMS HCPCS Level II release. Coverage codes indicate how Medicare treats the code, not whether a specific claim will be paid; payer policy and documentation still govern.
Coding context
Guidelines, coding notes, decision aids, relationships (with MS-DRG and CCSR classification), hierarchy, HCC, coverage and the context map: what a coder reaches for after the core. Each section names whether it is official source data, a MedCoder-derived relationship or MedCoder editorial.
Contextual Map
Every relationship of A9529 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Nearest codes (40)
- A9502 — Technetium tc-99m tetrofosmin, diagnostic, per study dose[Sibling]— CMS HCPCS Level II code set
- A9503 — Technetium tc-99m medronate, diagnostic, per study dose, up to 30 millicuries[Sibling]— CMS HCPCS Level II code set
- A9504 — Technetium tc-99m apcitide, diagnostic, per study dose, up to 20 millicuries[Sibling]— CMS HCPCS Level II code set
- A9505 — Thallium tl-201 thallous chloride, diagnostic, per millicurie[Sibling]— CMS HCPCS Level II code set
- A9506 — Graphite crucible for preparation of technetium tc 99m-labeled carbon aerosol, one crucible[Sibling]— CMS HCPCS Level II code set
- A9507 — Indium in-111 capromab pendetide, diagnostic, per study dose, up to 10 millicuries[Sibling]— CMS HCPCS Level II code set
- A9508 — Iodine i-131 iobenguane sulfate, diagnostic, per 0.5 millicurie[Sibling]— CMS HCPCS Level II code set
- A9509 — Iodine i-123 sodium iodide, diagnostic, per millicurie[Sibling]— CMS HCPCS Level II code set
- and 32 more
Change history
- January 1, 2004 — Added to the code set [Change history]— CMS release files (code change ledger)
Reference
Index terms and tables, published questions and FAQ, every source behind this page with its release and checksum, the date-of-service check and the complete change history.
Sources for this page
Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.
- Code, descriptors, coverage and pricing attributes Official source data
- CMS HCPCS Alpha-Numeric (ANWEB) release — October 2026 quarterly update Release, file and checksum · Publisher’s page
- Change history and date-of-service validity Official source data
- CMS HCPCS quarterly update files, ingested into the change ledger Release, file and checksum · Publisher’s page
- Comparisons, relationships and the contextual map MedCoder-derived relationship
- Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
- Summary and FAQ answers MedCoder editorial explanation
- Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.
Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources
Labels on this page: Official source data · MedCoder-derived relationship · MedCoder editorial explanation. How to read the labels · All data sources and release dates · CMS coding rules
Cite this page
Reference this page in a research guide, syllabus or article. The release is included because code content changes each year.
MedCoder.ai. "A9529 — Iodine i-131 sodium iodide solution, diagnostic, per millicurie." HCPCS Level II October 2026. https://medcoder.ai/hcpcs/code/a9529-iodine-i-131-sodium-iodide-solution-diagnostic-per-millicurie
Change history
- January 1, 2004Added to the code setIodine i-131 sodium iodide solution, diagnostic, per millicurieHCPCS 2004 changes
Nearest Codes in This Family
Official HCPCS Level II classifications closest to A9529 in its code family, with their registry titles.
- A9521 — Technetium tc-99m exametazime, diagnostic, per study dose, up to 25 millicuries
- A9524 — Iodine i-131 iodinated serum albumin, diagnostic, per 5 microcuries
- A9526 — Nitrogen n-13 ammonia, diagnostic, per study dose, up to 40 millicuries
- A9527 — Iodine i-125, sodium iodide solution, therapeutic, per millicurie
- A9528 — Iodine i-131 sodium iodide capsule(s), diagnostic, per millicurie
- A9530 — Iodine i-131 sodium iodide solution, therapeutic, per millicurie
- A9531 — Iodine i-131 sodium iodide, diagnostic, per microcurie (up to 100 microcuries)
- A9532 — Iodine i-125 serum albumin, diagnostic, per 5 microcuries
- A9536 — Technetium tc-99m depreotide, diagnostic, per study dose, up to 35 millicuries
- A9537 — Technetium tc-99m mebrofenin, diagnostic, per study dose, up to 15 millicuries